Question

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

Answer 1

Answer:

(x + 15) / 2

Step-by-step explanation:

Distance = rate × time

d = (x² – 225) / (2x − 30)

d = (x – 15) (x + 15) / (2 (x – 15))

d = (x + 15) / 2