A small school employs 555 teachers who make between \$40{,}000$40,000dollar sign, 40, comma, 000 and \$70{,}000$70,000dollar sign, 70, comma, 000 per year. The newest teacher, Valerie, decides to teach part-time which decreases her salary from \$40{,}000$40,000dollar sign, 40, comma, 000 to \$20{,}000$20,000dollar sign, 20, comma, 000 per year. The rest of the salaries stay the same.
How will decreasing Valerie's salary affect the mean and median?

c. (3,2,6) is the answer.

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.

look at photo