COMPLETE THE FOLLOWING QUESTIONS.
WINONA AND TAKODA ARE SHOPPING FOR A PRESENT FOR THEIR MOTHER. THE CHART SHOWS SEVERAL POSSIBLE PRESENTS. THERE IS NO SALES TAX IN THE STATE WHERE THEY LIVE.
PRESENT COST ($) DISCOUNT (%) TOTAL PAID
POWER TOOLS D 15%
WATER SKIS D + 15 25%
JEWELRY D - 5 10%
A. WRITE TWO EXPRESSIONS IN TERMS OF D TO SHOW HOW MUCH WINONA AND TAKOTA WOULD PAY IN TOTAL IF THEY BUY THEIR MOTHER THE SET OF POWER TOOLS.
B. WHAT DOES THE EXPRESSION 0.90 (D – 5) REFER TO? HOW DO YOU KNOW? HOW ELSE COULD THIS EXPRESSION BE WRITTEN?
A. The two expressions to show how much Winona and Takoda would pay in total if they buy their mother the set of power tools are:
1. Total Paid = D - 0.15D
2. Total Paid = 0.85D
B. The expression 0.90 (D - 5) refers to the total amount paid if they buy their mother jewelry with a discount of 10%. I know this because the expression subtracts 5 from D and then multiplies it by 0.90, which represents a 10% discount. This expression could also be written as 0.9D - 4.5.