Sandy programmed a website's checkout process with an equation to calculate the amount customers will be charged when they
download songs.
The website offers a discount. If one song is bought at the full
price of $1.29, then each additional song is $.99.
State an equation that represents the cost, C, when s songs are
downloaded.
Sandy figured she would be charged $52.77 for 52 songs. Is this
the correct amount? Justify your answer.

Does the function satisfy the hypotheses of the mean value theorem on the given interval? f(x) = 4x^2 + 3x + 4, [−1, 1] no, f is continuous on [−1, 1] but not differentiable on (−1, 1). no, f is not continuous on [−1, 1]. yes, f is continuous on [−1, 1] and differentiable on (−1, 1) since polynomials are continuous and differentiable on . there is not enough information to verify if this function satisfies the mean value theorem. yes, it does not matter if f is continuous or differentiable; every function satisfies the mean value theorem.