R(x) = -4x² + 5x1
r(-3) =?

 r(x) = -51  

If the 1 is not a +1  or a -1    

It is very unusual to have a 1 in that position.

Step-by-step explanation:

Substitute the value given (-3) in place of x, and evaluate the function.

r(-3) = -4(-3)² + 5(-3)

r(-3) = -4(9) - 15

r(-3) = -36 -15

r(-3) = -51

x=half

step-by-step explanation:

the answer is 1030 it's very simple math.