Answer:
f(x) = 7x^2 - 4x + 3 = 78.
Explanation:
you simply need to substitute -3 in place of x and perform
the calculations. f(-3) = 7(-3)^2 - 4(-3) + 3 bec x is equal to -3
Now use PEMDAS
f(-3) = 7 * 9 + 12 + 3
multiply 7 and 9
f(-3) = 63 + 12 + 3
add 63, 12 and 3
f(-3) = 78
So, when x = -3, the value of the function f(x) = 7x^2 - 4x + 3 is 78.