An author is paid $500 as an advance on their book plus an additional $4 for every book sold. if the author earns $880, how many books has he or she sold?

An angle that measures between 90 and 180° is called a(,

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Ana earns 2.5% simple interest on $2,000 in her savings account. she does not make any deposits or withdrawals. after 3 years, how much interest will ana have earned on her savings account?