Alex rides 45 miles in 3 hours. write an equation that shows the relationship between the distance, d and the time, t that he rides if alex rides at a constant rate if speed

So I'm assuming that Speed is going to stay Constant

So lets first  find out how many miles Alex rides in 1 hour

45/3 = 15

He has driven 15 miles in 1 Hour.

But we are not quite done, you have to put this in an equation.

D(Distance) = 15T(Time)

Hope this Helped you!
-IamAHotShot