Answer:
f(3) = 71
Step-by-step explanation:
f(x) = 10(x + 5) − 9
f(3) = 10(3 + 5) - 9
f(3) = 10(8) - 9
f(3) = 80 - 9
1/4 x + 1/8 y = 14
2 root ( 5,0)
y intercept (0,5)