Find the requested value.
-$$f ( x ) = 5 x ^ { 2 } - 4 , g ( x ) = x - 7$$
Find $( f - g ) ( 4 )$.
A) 79
B) 65
C) $- 80$
D) 87

Name: Find the requested value. -\[f ( x ) = 5 x ^ { 2 } - 4 , g ( x ) = x - 7\] Find $( f - g ) ( 4 )$. A) 79 B) 65 C) $- 80$ D) 87
Brand: Quizplus
Rating: 4.8 (31 reviews)

Question

Quizplus · Accepted Answer

To find $(f - g)(4)$, we first calculate $f(4)$ and $g(4)$, and then subtract the latter from the former. For $f(4) = 5(4)^2 - 4 = 5(16) - 4 = 80 - 4 = 76$, and $g(4) = 4 - 7 = -3$. Thus, $(f - g)(4) = 76 - (-3) = 76 + 3 = 79$.

Find the Requested Value f(x)=5x2−4,g(x)=x−7f ( x ) = 5 x ^ { 2 } - 4 , g ( x ) = x - 7f(x)=5x2−4,g(x)=x−7

Find the Requested Value $f ( x ) = 5 x ^ { 2 } - 4 , g ( x ) = x - 7$