Answer:
x-.30(x)
Step-by-step explanation:
m+f=38
(f-4)^2=m-4
f^2=m IF their age is 30 combined
4^2=16
16=16
Fred is 4, Mabel is 16.
C
$15x8=$120 = money earned at first job
$12x3=$36 = money earned at second job
$120+$36=$156 =total earned
