Me solve for this:
75% of the people at a stadium are adults and the rest are children. 30% of the children are girls. if there are 2100 people at the stadium, write an equation to demonstrate how many boys there are at the stadium and solve.

Two parallel lines are crossed by a transversal. what is the value of x? x = 40 x = 70 x = 110 x = 130

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.