dr. grumman got his first job in 2016. in that year, the government took out 6.2% of a persons income for social security until a person made $118,500. if dr. grumman earned $131,340 in 2016,how much did he pay to social security?

(calculator required) this question seems pretty difficult.

the sum of all the angles in a triangle are equal to 180

so you can add   the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180