Mrs. Genaro owns a small business. She borrows $18 500 dollars from the bank to finance some new equipment. She repays the loan in full after two years. If the bank charged her compound interest at the rate of 21% per annum, how much did she owe them after two years?

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Two farmers pay a total rent of $140 for a pasture. the first farmer placed $4 oxen in the pasture, and the second farmer placed $30 sheep in the pasture. the farmers split the rent based on the proportion of the pasture eaten by their own animals that month. how much should the first farmer pay, if 1 ox eats as much as 10 sheep in a month?

Find the sum of the given arithmetic series. 24 + 17 + 10 + 3 + + (–39)