Question

Select the correct answer for when you evaluate the following function at f(5):

​
​ f(x)=−x2+2x−1

A
34
B
4
C
-16
D
14

Answer 1

A. 34
f(5)=5^2+2x-1
you replace all x with 5
5^2=25
2(5)= 10
f(5)=25+10-1
f(5)=34

Answer 2

A because (-5)^2 = 25 + 2(5) =35-1=34