What percent of 126 is 22?

If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).

The holiday party will cost $160 if 8 people attend.if there are 40 people who attend the party, how much will the holiday party cost

Angles r and s are complementary. the measure of angle r is 31 degrees. which equation can be used to find angle s?