F(x) = x + 2, 2 < 0
f (x) = 4x, x > 0
what is f(-3)

The zero of a function is the x-value that, when plugged into a function, makes the function equal to 0. f(x) means that we have a function of x. The zero of the function f(x)=2x-2 is the x-value that makes f(x) = 0. So we can just set the function equal to 0, and then solve for x!

Step-by-step explanation:

anytime i will help

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.