(7.1a; 7.1b)
4. rosalie bought 4 books that each
cost $15.75. she used a coupon for
20% off her purchase, and she paid
sales tax of 8%. rounded to the
nearest cent, what was the final cost
of rosalie's books?
a $13.61
b $50.04
c $54.43
d $68.04

The total cost of the books is

The coupon takes 20% of the price away, so she pays the remaining 80%:

And then she adds 8%, meaning that she pays 108% of this amount:

$450.00 for 6 weeks

or

$300

step-by-step explanation:

$200.00 for first week $50.00 x5 equals $250 plus $200 equals $450.00 for six weeks.

$200 for first week

$200 x 0.10 = $20

$20 x 5 = $100

$200 + $100 = $300

2/3

step-by-step explanation:

the slope of a line is equal to the rise/run. in this case the line rises 2 units for every +3 units it moves