How do you solve an equation that says set them equal and find the two variables

Sam borrow $2,000 from the bank at a rate of 7% simple interest per year. How much interest did he pay in five years?

The Patel family has a disposable income of $90,000 annually. Assume that their marginal propensity to consume is 0.

A town has a population of 13000 and grows at 4.5% every year. What will be the population after the 13 years

Verify that 3x (5x^2 - 7x + 12) is equivalent to the 15x^3 - 21x^2 + 36x

Simplify - 4/5 + (-5/3)

Eugene stands 8 feet from a wall where his family portrait is hanging. Eugene's eye height is 5 feet above the floor and the angle of elevation from his eyes to the top of the portrait is 46. How far above the floor is the top of the portrait?

Jane took a survey at school and found that 3 of the students surveyed planned to take wood shop as their next elective, while 9 of them planned to take other electives.

Jerome bought 2 postcards and received $1.35 in change in quarters and dimes. If he got 6 coins back, how many of each coin did he get

How do you changes 2 1/8 as a whole number

6 1/3 + 4 ¾ + 3 7/12 =