Question

F(x) = 3x² + 4x + 19
Find f(-7)

Answer 1

F(-7)= 3(-7)^2 +4(-7)+19= 128

Answer 2

In the given function f(x) = 3x² + 4x + 19, the value of f(-7) is 138.

Step-by-step explanation:

To find f(-7), we substitute -7 for x in the given function f(x) = 3x² + 4x + 19:

f(-7) = 3(-7)² + 4(-7) + 19

Simplifying:

f(-7) = 3(49) - 28 + 19

f(-7) = 147 - 28 + 19

f(-7) = 138

So therefore, the value of f(-7) = 138.