Question

f(x)= -4x² + 5x
find f(6).

Answer 1

Answer:

The answer is -114.

Step-by-step explanation:

You have to substitute x = 6 into the function :

$f(x) = - 4 {x}^{2} +5 x$

$f( 6) = - 4 {(6)}^{2} + 5(6)$

$f(6) = - 4(36) + 30$

$f(6) = - 144 + 30$

$f(6) = - 114$