25-1 To evaluate an algebraic expression: 1.) Plug in the value for each variable and rewrite the expression2.) Follow order of operations to solve (show work step by step)
3Evaluate each expression 3m² ̶ 4 if m = -36s ̶ 3t if s = 4 and t = -2
4Write expressions from word problems Key words like each and per tell you where variable should go and to multiplyLook for other key words to tell you what operation to use
5Nicole has d dollars in her bank account Nicole has d dollars in her bank account. On her birthday, she received $150 from family and friends to put into her account. Write an expression to represent the total amount of money now in her account.
6Andy is buying some T-shirts and shorts for his wardrobe Andy is buying some T-shirts and shorts for his wardrobe. Each T-shirt costs $14 and each pair of shorts costs $18.Write an algebraic expression to represent the total cost of buying x T-shirts and y pairs of shorts.Find the total cost of buying 4 T-shirts and 3 pairs of shorts.
7Mitchel bought c cups for $6 each. Jennifer bought d cups for $6 each Mitchel bought c cups for $6 each. Jennifer bought d cups for $6 each. Write an expression that can be used to find the total amount Mitchel and Jennifer spent for the cups.
85-2Need to know what an arithmetic sequence is and be comfortable describing the pattern and continuing the pattern
95-3 NEED TO KNOW THE 5 PROPERTIES IN LESSON 3! Commutative Property (+ or x)Associative Property (+ or x)Additive IdentityMultiplicative IdentityMultiplicative Property of Zero
10Name the property shown by each statement. 1.) 6 + (b + 2) = (6 + b) + 22.) 1 x 4 = 43.) 7 + t = t + 7
115-4Need to know how to rewrite expressions using the Distributive PropertyIf you have a negative number on outside of parentheses and subtraction sign on inside of parentheses, ___________________Don’t forget to distribute to the second term inside the parentheses!
12Use the Distributive Property to rewrite each expression
135-5 Simplifying Algebraic Expressions STEPS: 1.) Get rid of all subtraction signs (keep, change, opposite)2.) Distribute to get rid of parenthesis (if needed)3.) Show the like terms (circle, underline, box)4.) Simplify*List variable terms first and alphabetically
14Write each expression in simplest form 1.) -4x x – 62.) x – 4 – 12x – 9
15Write each expression in simplest form 3.) -3x – 4(5x + 7)4.) 6(4a + 3b) – 8a
16Identify the terms, like terms, coefficients, and constants in each expression. 1.) 9 – 5x – 2 + x2.) -y + 4 – 7y
175-6 Add linear expressions STEPS: 1.) Get rid of subtraction signs (keep, change, opposite)2.) Distribute if needed3.) Rewrite without parentheses and show like terms4.) Simplify
19Write a linear expression in simplest form to represent the perimeter of the triangle. Find the perimeter if the value of x is 4 inches.
20The table gives the number of laps Pragitha swam each week The table gives the number of laps Pragitha swam each week. Write an expression in simplest form for the total number of laps she swam all four weeks.Week1234Lapsx + 23x2x + 14x – 6
215-7 Subtract Linear Expressions STEPS: 1.) Put a 1 after the subtraction sign in the middle of the two expressions2.) Get rid of subtraction signs3.) Distribute -1 to the second expression4.) Add like terms and simplify
23Jacob has (4n + 7) crayons. Maria has (3n + 2) crayons Jacob has (4n + 7) crayons. Maria has (3n + 2) crayons. Write an expression to show how many more crayons Jacob has than Maria.Then evaluate the expression if n = 6.
24The table gives the cost of a gallon of gasoline at two stations The table gives the cost of a gallon of gasoline at two stations. How much more does gasoline cost at Gas For Less than at Cut-Rate?Cut-Rate–2x + 3.5Gas for Lessx – 1.2
255-8 Factor Linear Expressions STEPS: 1.) Find GCF of both terms 2.) Divide both terms by GCF and put in parentheses3.) Put GCF outside of parentheses*Use Distributive Property to check(Don’t forget about bday cake shortcut)