The coffee variety Arabica yields about 750 kg of coffee beans per hectare, while Robusta yields about 1200 kg per hectare. Suppose that a plantation has hectares of Arabica and r hectares of Robusta.

Write an equation relating a and r if the plantation yields 1,000,000 kg of coffee

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

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.

Two angles are complementary. the larger angle is 36 more than the smaller angle. what is the measure of the larger angle?