Question

PLEASE!! i need help quickk

Evaluate - 3(q + r) + 8q - 11r when q = - 7 and r = 8. Show and explain all your work.

Answer 1

sub q and r into the equation. use pemdas to solve. start with the parentheses. then do multiplication. then subtract/addition.

Answer 2

Explanation:

To evaluate the expression -3(q + r) + 8q - 11r when q = -7 and r = 8, we can substitute the values of q and r into the expression and simplify.

First, let's substitute the values:

-3(-7 + 8) + 8(-7) - 11(8)

Now, let's simplify:

-3(1) + 8(-7) - 11(8)

-3 + (-56) - 88

-3 - 56 - 88

-59 - 88

-147

Therefore, when q = -7 and r = 8, the value of -3(q + r) + 8q - 11r is -147.