Question

Given that

R=8x + 4y
Find y when x = 8 and R=30
Give your answer as an improper fraction in its simplest form.

Answer 1

-17/2

Explanation:

30-8(8)+4y

30=64+4y

30-64=4y

-34=4y

y= -34/4

y= -17/2

hope it helps!