A formula for determining the finite sum, of an arithmetic sequence of numbers is S=n/2(a+b), where n is the number of terms, a is the first term, and b is the last term. Express b in terms of a, s, and n.

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.

Jayne is studying urban planning and finds that her town is decreasing in population by 3% each year. the population of her town is changing by a constant rate.true or false?

Use the distance formula to find the distance between (-3,5) and (3,1)