Answer: y = 50mph*x + 7.5mi
Step-by-step explanation:
This can be modeled with a linear equation:
y = a*x + b
Where y is the distance traveled
x is hours
a is the distance that he moves in one hour
b is the initial distance moved.
We know that he has gone 7.5 miles so far, so b = 7.5mi
we know that from this point, he can cover 50 miles per hour, so a = 50mph
Then the equation is:
y = 50mph*x + 7.5mi