1. Mathematics Enrichment DAY 6

2. AVERAGE = add and divide by the total TOTAL STEP 1: Get rid of answer choices that do NOT show the division by the TOTAL. This is dividing by the ticket prices NOT the TOTAL. This is MULTIPLYING by the TOTAL. STEP 2: Now that you only have 2 answer choices left, check the variables. STEP 3: ADULTS is represented by which variable? X = Adults STEP 4: CHILD is represented by which variable? Y = Children Therefore, tickets cost $8.50X and $5.25Y The variables are with the WRONG amounts.

3. STEP 1: Let’s make a table to see what’s going on when Lara sees a movie. MOVIEBALANCE Lara receives the card. 0 $100 1 100-9.95=90.05 2 90.05-9.95=80.10 3 80.10-9.95=70.15 Lara sees the 1 st movie & $9.95 is deducted from the card. Lara sees the 2 nd movie & another $9.95 is deducted. Lara sees the 3 rd movie & another $9.95 is deducted. STEP 2: By now, you can see that $9.95 is deducted from the card every time Lara sees a movie. Get rid of answer choices that do NOT show this subtraction. This is NOT subtracting $9.95 per movie. STEP 3: Now decide whether $9.95 should be multiplied by n or b. Remember, b = balance on card Remember, n = number of movies

4. DependentDependent RangeRange Y doMaindoMain IndepentIndepent X STEP 1: They are asking for a VARIABLE. Get rid of answer choices that have numbers. A number is NOT a VARIABLE! STEP 2: When you see a problem like this, think of the pneumonic device DRY MIX. So, looking at y = 3x+5, the dependent variable is “y”.

5. Cost per field $40 per day $40 lights $30 set up Cost per field $40 per day $40 lights $30 set up Cost per field $40 per day $40 lights $30 set up Besides the above costs per field, there is a $10 cost for parking and a $10 reservation fee. What is the best way to find the TOTAL cost?