Answer:
f(x) = 15
Step-by-step explanation:
"If f(x)= 5x + 40, what is f(x) when x = -5?"
Substitute x for -5:
f(x) = 5x + 40
f(x) = 5(-5) + 40
f(x) = -25 + 40
f(x) = 15
Answer: 1/2
Step-by-step explanation: y = (1/2)x has the format y = kx, where k is the const. of prop. In this particular case that const. of prop. is (1/2).
Answer:
21
Step-by-step explanation:
21/3 = 7
Answer:
Answer: 5x² - 4
Step-by-step explanation:
f(x) = 4x² + 1
g(x) = x² - 5
Then
(f + g)(x) = 4x² + 1 + x² - 5
= 5x² - 4
Answer: 5x² - 4
Answer:
4 Jeans and 2 dresses
Step-by-step explanation:
25×4=100
50×2=100
