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Mathematics Enrichment DAY 6 TOTAL This is dividing by the ticket prices NOT the TOTAL. This is MULTIPLYING AVERAGEby = the add TOTAL. and divide by the total The variables are with the WRONG amounts. STEP 1: Get rid of answer choices that do NOT show the division 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 This is NOT subtracting $9.95 per movie. This is NOT subtracting $9.95 per movie. STEP 1: Let’s make a table to see what’s going on when Lara sees a movie. MOVIE 0 BALANCE $100 Lara receives the card. Lara sees the 1st movie & $9.95 is deducted from the card. 1 100-9.95=90.05 2 90.05-9.95=80.10 Lara sees the 2nd movie & another $9.95 is deducted. 3 80.10-9.95=70.15 Lara sees the 3rd 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. STEP 3: Now decide whether $9.95 should be multiplied by n or b. Remember, b = balance on card Remember, n = number of movies 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. d o D R Y I X M e a n a p n d i e g e n n e p d e e n n t t So, looking at y = 3x+5, the dependent variable is “y”. 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?