Important quiz, please help!

So your answer would be A. m=8d. Hope this helps :)

The answer is A

If she rode the bus once (1 day), then the total number of minutes she spends on the bus is 8 minutes

Day (d) = 1

m = 8d
m = 8(1)
m = 8

If she rode the bus twice (2 days), then the total number of minutes she spends on the bus is 16 minutes

Day (d) = 2

m = 8d
m = 8(2)
m = 16

This system has one solution, because both of the equations are linear. The answer is (4/3, -2).