Tim left $3000 in an account that paid 8% interest compounded
annually. How much interest did
Tim earn in 2 years?

499.20

Step-by-step explanation:

3000

x.08.    Interest rate

=   240 interest after one year

+. 3000

=3,240 principal plus interest after one year

x. .08

  259.20. Interest in year two

+ 240.00 interest in year one

= 499.20. Interest earned in 2 years

2 is the final ! : )

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.