Your family starts lowering their monthly bills every month. after 2 months, your family will pay $734.90 in monthly bills. after 8 months, your family will pay 678.68 how much will your family pay after 24 months and how much was your family paying at the beginning when you decide to lower the bills?

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.