What is 5.6 × 10^−3 yd/year in feet per day?  
A.
6.813 × 10^−7  ft/day
  
B.
6.132 × 10^−6  ft/day
  
C.
5 × 10^−6  ft/day
  
D.
4.6 × 10^−5  ft/day
Please explain the answer :)



Answer :

5.6x10^-3 yd/year in feet per day.

There are 3 feet in a yard

(5.6x10^-3)x3=1.68x10^-2 feet/year
Let's take there to be 365 days in the year (Fun fact: The actual duration of our year is 365 days 5 hours, 48 minutes 46 seconds)

[tex] \frac{1.68*10^{-2}}{365} = 4.6*10^{-5}[/tex]

Therefore the correct answer is D.