What would be the next number in the seqence 40,46,52

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.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?

If a line is defined by the equation y = 5x + 2, what is the slope?