Bob is taking his son to look at colleges. the first college they plan to visit is 150 miles from their home. in the first hour they drive at a rate of 60 mph. if they want to reach their destination in 2.5 hours, what speed must they average for the remainder of their trip? (i wouldn't mind if you use a proportion since that's how i'm supposed to solve it)

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

s ----> the speed in mph

d ----> the distance in miles

t ----> the time in seconds

step 1

In the first hour they drive at a rate of 60 mph

Find the distance traveled

we have

substitute

so

The remainder of the trip is equal to

step 2

Find out the average speed for the remainder of the trip

we have

substitute the values

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.