1. Intro to Situations  Equations January 21, 2015

2. Instructions You will need: – Paper – Packet of questions On paper: – Name, date, and class period on paper – Number 1-20 You will be working through the packet with your group. Ask questions when needed

3. Ok, lets put some of that together. The price of Lavender’s monthly phone bill is $212.00. The phone company charges her a fee of $80.00 and then charges her 2 dollars per minute. Which equation represents the number of minutes, m, Lavender used? A.80 – 2m = 212 B.80 + 2m = 212 C.212m + 2 = 80 D.212 + 2m = 80

4. Ok, lets put some of that together. The price of Albus’s water bill was $83.00. The water company charges them a one time service fee of $25.00 and 4 dollars per gallon used. Which equation shows the number of gallons, g, used by Albus? A.4g + 25 = 83 B.25g + 4 = 83 C.29g = 83 D.25 – 4g = 83

5. Ok, lets put some of that together. So far this year, Draco has paid $425 to his cable company. They charge him a one time installation fee of $25.00 and $50.00 per month. Which equation can be used to find out how many months, m, Draco has had this TV service? A.25m + 50 = 425 B.M + 25 + 50 = 425 C.25 + 50m = 425 D.425 + 50m = 25

6. Ok, lets put some of that together. The bowling alley charges a flat fee of $5.00 for shoes and a fee of $3.00 per game. Which equation represents the total cost of, c, for a night of bowling when g games are played? A.g(3 x 5) = c B.3g + 5 = c C.5g + 3 = c D.3c + 5 = g

7. Ok, lets put some of that together. The skate center charges $6 for skates and $2 per hour of skating. Which equation represents the total cost (t) for h hours of skating? A.6 + 2h = t B.12h = t C.6h + 2 = t D.6 + 2 + h = t

8. Ok, lets put some of that together. A group of friends are getting ready for prom. The limo company charges a 100 dollar flat fee and $30.00 per hour that you use the limousine. What equation shows the price (p) of the limousine for h hours? A.100 x 30h = p B.100h x 30 = p C.100h + 30 = p D.100 + 30h = p

9. Ok, lets put some of that together. Minerva is twice as old as Penelope plus 6 years. Which equation could represent how old Minerva is, m, when Penelope is p years old? A.m = p + 6 B.m = p – 6 C.m = 2p – 6 D.m = 2p + 6

10. Ok, lets put some of that together. Madame Pomfrey has three times as much books as Neville plus 10. Which equation could represent how many books Madame Pomfrey has, m, when Neville has n books? A.N + 10 = m B.3n + 10 = m C.3n – 10 = m D.N(3 + 10) = m

11. Ok, lets put some of that together. Hagrid ate 4 times as much pizza as Luna plus 3 pieces. Which equation represents how much Hagrid ate, h, when Luna ate L pieces A.h = 4L + 3 B.h = 3L + 4 C.h = 4L - 3 D.h = 3L - 4

12. Ok, lets put some of that together. Lucius has $62.00 and wants to buy a binder for $12.00 and some notebooks for $4.50 each. Which equation represents how many notebooks, n, Lucius can afford? A.n = 4.50 + 62 + 12 B.12 = 62 + 4.50n C.62 = 12 + 4.50n D.4.5 = 12n + 62

13. Ok, lets put some of that together. Petunia wants to go to the arcade and she knows she has $17.00 to spend. She wants to buy a coke for $3.00 and games cost $0.50 each. Which equation represents how many games, g, Petunia can play? A.g = 17 + 3 + 0.5 B.17 x 3 x 0.5 = g C.17 = 3g + 0.5 D.17 = 0.5g + 3

14. Ok, lets put some of that together. Vernon is going to take his friends to the Pottery Place to paint pottery for his birthday. They told Vernon they would charge him a fee of $25.00 and it would cost 7 dollars for each friend to paint pottery. If Vernon has $60.00 to spend, which equation could be used to find out how many friends, f, he could invite? A.60 = 7 + 25f B.60 = 7f + 25 C.25 = 7f + 60 D.25 = 60f + 7

15. Ok, lets put some of that together. Bellatrix bought 5 hats that cost $12.00 total. Which equation could be used to find h, the cost of one hat? A.12 – 5 = h B.h = 12 + 5 C.12h = 5 D.5h = 12

16. Ok, lets put some of that together. Griphook sold 12 of his vintage cologne bottles for $30.00. Which equation could be used to represent the price of one cologne bottle, c. A.12= 30c B.30 = 12c C.30 + c = 12 D.12 + c = 30

17. Ok, lets put some of that together. Remus bought a pizza for five dollars. The pizza had 10 slices. Which equation could be used to determine s, the price for one slice of pizza, in dollars? A.10s = 5 B.5s = 10 C.10 x 5 = s D.10/s = 5

18. Ok, lets put some of that together. Firenze had 16 candles. He gave an equal amount to 3 of his friends. Then he bought 4 more. Which equation represents how many candles he has now, c, after giving some away to x friends and buying some more? A.x = 16 – 3c + 4 B.x = 16 – 4c + 3 C.c = 16 – 3c + 4 D.c = 16 – 4c + 3

19. Ok, lets put some of that together. James had 6 invisibility cloaks. He gave the same amount to four friends and then he bought 10 more. Which equation could be used to find how many invisibility cloaks he has now, i, after giving some away to w friends and then buying some? A.i = 6 – 4 + 10 B.i = 6 – 10 + 4 C.i = 6 – 10w + 4 D.i = 6 – 4w + 10

20. Ok, lets put some of that together. Luna had a bunch of lemon drops leftover. She started with 20 and then gave an equal amount to 7 friends. Then she went out and bought 3 more. Which equation shows the amount of lemon drops L, luna has after buying some and giving some away to f friends? A.L = 3 – 20f + 7 B.L = 7 – 20f + 3 C.L = 7 – 3f + 20 D.L = 20 – 7f + 3

21. Ok, lets put some of that together. Cho bought 4 pairs of dress robes for 15 dollars each. The shop was having a sale and was going to take the discount, d, off of each robe at the register. Which equation can be used to find p, the total price after the store took the discount off of each robe? A.p = (15 x 4) + 4d B.p = 15 – 4d C.p = (15 x 4) – d D.p = (15 x 4) – 4d

22. Ok, lets put some of that together. Teddy was going to buy new shoes. He wants to buy 5 pairs of shoes for $34.00 each. The store is having a sale and will take some money, x, off of each one. Which equation will help to determine how much, m, Teddy will have to pay after the shoes are reduced in price? a.m = 34 – 5x b.m = 5x + 34 c.m = (5  34) – 5x d.m = (5  34) – x

23. Ok, lets put some of that together. Tonks found out that packs of diet cokes were on sale at Food Lion. She went and bought 8 of them. They were originally $5.00 each. The cashier took the discount, d, off of each one at the register. Which equation could be used to find t, the total cost of her purchase after the discount was taken off? A.t = (8 x 5) – d B.t = (8 x 5) – 5d C.t = (8 x 5) – 8d D.t = (5 x 8) – d

24. Answer Key 1.A 2.C 3.B 4.A 5.D 6.D 7.B 8.A 9.C 10.D 11.B 12.D 13.B 14.A 15.A 16.D 17.D 18.D 19.C 20.C