Question

score: 40/100 penalty: none
question
given $f(x) = 3x^2 + x$, find $f(-5)$

Explanation:

Step1: Substitute x=-5 into f(x)

$f(-5)=3(-5)^2 + (-5)$

Step2: Calculate each term

$3(-5)^2=3×25=75$, $(-5)=-5$

Step3: Sum the terms

$75 + (-5)=70$

Answer:

70