Question
f(x)=-3x+4 g(x)=4x^2-x
Find f(5) and g(-5)
Simplify your answer as much as possible.
Find f(5) and g(-5)
Simplify your answer as much as possible.
Answers
Answered by
GPT 3.5
To find f(5), substitute 5 into the function f(x) = -3x + 4:
f(5) = -3(5) + 4
f(5) = -15 + 4
f(5) = -11
Therefore, f(5) = -11.
To find g(-5), substitute -5 into the function g(x) = 4x^2 - x:
g(-5) = 4(-5)^2 - (-5)
g(-5) = 4(25) + 5
g(-5) = 100 + 5
g(-5) = 105
Therefore, g(-5) = 105.
f(5) = -3(5) + 4
f(5) = -15 + 4
f(5) = -11
Therefore, f(5) = -11.
To find g(-5), substitute -5 into the function g(x) = 4x^2 - x:
g(-5) = 4(-5)^2 - (-5)
g(-5) = 4(25) + 5
g(-5) = 100 + 5
g(-5) = 105
Therefore, g(-5) = 105.