If anyone can me out here that would be john forgot to pay his phone bill for 2 months! he was travelling with his frisbee golf travel team and it just slipped his mind. his monthly phone bill is $89.95 per month. when he went to pay his phone bill, he remembered that he had been given a credit of $95 for an issue he had a few months back with some bad customer service. but he also recalled that he had received $12.75 in extra charges for data usage. where does john stand with the phone company right now?

I'm confused on this could anyone me and show me what i need to do to solve it.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.

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.