Answer:
$46.20
Step-by-step explanation:
We can create a proportion to find the sale on the original price. A proportion is an equation where two ratios are set equal to each other. We create two fractions using the prices and percents. If the price is discounted by 30% then we pay 70% of the price.

We begin solving by cross multiplying numerator to denominator of each fraction.

15/20 is 3/4s or 0.75
1/4 is 0.25
5:9 and 5 to 9 are two other ways to write the fraction 5/9.
I hope this helps:)
Answer:
z=2.61
Step-by-step explanation:
A. 75 x 0.0016= .12 Has a value between 0 and 1
B. 3^5 / 3^-6 = 177147 Does not a value between 0 and 1
C. 1/4^3 x 1/4^2 = about 0.0009 Has a value between 0 and 1
D. -7^5 / -7^7 = about 0.02 Has a value between 0 and 1