Your friend runs for (x² – 225) seconds at a rate of (1)/(2x - 30) per second. How far does your friend run?​

Question

Your friend runs for (x² – 225) seconds at a rate of


`(1)/(2x - 30)`
per second. How far does your friend run?​

Answer 1

(x + 15) / 2

Explanation:

Distance = rate × time

d = (x² – 225) / (2x − 30)

d = (x – 15) (x + 15) / (2 (x – 15))

d = (x + 15) / 2