Isolved 4, the answer is 11, seconds: 5x+4(x-3)=87 = x=11, but i don't know how to solve number 5, anyone explain how to get i'm giving extra brainlist

The answer x = 11 is correct for problem 4. Nice work.

Use this x value to find the answer in problem 5. From problem 4, we're told that Romeo runs at a speed of 5 m/s. If he runs for x = 11 seconds,then he runs a total distance of:

5*x =(5 m/s)*(x meters) = (5 m/s)*(11 seconds) = 5*11 = 55 meters

The answer to problem five is 55 meters

the answer is d. 75%