Athree-letter word used to show division in a word problem.

How to find the exponential function y=ca^x, with points (1,2) and (2,1)

Sam opened a money-market account that pays 3% simple interest. he started the account with $7,000 and made no further deposits. when he closed the account, he had earned $420 in interest. how long did he keep his account open?

Write as a product of two polynomials. 2(3–b)+5(b–3)^2