Type the correct answer in each box. Use numerals instead of words. Consider this expression.
-4x2 + 2x – 5(1 + r)
What expression is equivalent to the given expression?

bzbshshshs

Step-by-step explanation:

answer: y = -12x + 108

step-by-step explanation: do (y = m x+b) formula.

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.