What is y if x equals 5.

Y=-4x^2-3x+4

-4 x 5^2 - 3 x 5 + 4

Thats the same equation, with 5 instead of X.

No parantheses, so we do the exponents first.

5^2 = 25

so

-4 x 25 - 3 x 5 + 4

Next: Multiplication.

-4 x 25 = - 100

3 x 5 = 15

-100 - 15 + 4

Next: Addition:

-100 - 19

which equals

-119

I hope I did this right but y = - 146