Which of these expressions is equivalent to 0.03(x+80)? A. 0.03x + 2.4

B. 0.03x + 80

C. 0.03x + 80.03

D. 0.03x + 24

.25

step-by-step explanation:

12.5 feet

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.