Question

f(x)=3x + 2
g(x)=-2x^{2}
h(x)=-4x^{2}-2x + 5
find the value of f(-4)
a 14
b -10
c -14
d 10

Explanation:

Step1: Substitute x = -4 into f(x)

$f(-4)=3\times(-4)+2$

Step2: Calculate the product

$3\times(-4)= - 12$, so $f(-4)=-12 + 2$

Step3: Calculate the sum

$-12+2=-10$

Answer:

B. -10