Answer:
option A
9×10^4/2×10^2
Explanation:
Given in the question,
length of dollar bill = 6
width of dollar bill = 3
area of dollar bill = L x W
= 6 x 3
= 18inches²
length of driveway = 30
width of driveway = 20
area of driveway = L x W
= 30 x 20
= 600 ft²
1 ft² = 144 inches²
600 ft² = 86400 inches²
Number of dollar bills that would cover Kenisha driveway = 86400 / 18
Which can also be written as
86400 = 9 x 10

18 = 2 x 10²
