Ronald is traveling by bus from his home to his college. He has
gone 7.5 miles so far. From this point on, he can cover 50 miles
every hour. What is the equation that models this situation ("y' will
be total miles and "x" will be hours)?

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