I think that it would be A
Answer:
addition
Step-by-step explanation:
add 40+8 and you get 48 :P
Answer: 54
<u>Step-by-step explanation:</u>
replace "a" with "-2" in the g-equation
g(a) = a² - 4a + 42
g(-2) = (-2)² - 4(-2) + 42
= 4 + 8 + 42
= 54
5.34x10⁶ :) you're welcome!!!