Please help me out. Answer quick

See below

Step-by-step explanation:

1. (fоg)(x) means f of g(x). You would plug in g(x) into f(x).

(fоg)(x)=3(4x²-5)-3

(fоg)(x)=12x²-15-3

(fоg)(x)=12x²-18

2. (gоf)(x) means g of f(x). You would plug in f(x) into g(x).

(gоf)(x)=4(3x-3)²-5

(gоf)(x)=4(9x²-18x+9)-5

(gоf)(x)=36x²-72x+36-5

(gоf)(x)=36x²-72x+31

3. (fоg)(0) means f of g(0). You would plug in g(0) into f(x).

(fоg)(0)=3(-5)-3

(fоg)(0)=-15-3

(fоg)(0)=-18

4. (gоf)(0) means g of f(0). You would plug in f(0) into g(x).

(gоf)(0)=4(-3)²-5

(gоf)(0)=4(9)-5

(gоf)(0)=36-5

(gоf)(0)=31

i dont know sorry

step-by-step explanation:

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.