19. Brielle's piggy bank has all nickels and dimes. The total value of the money in her piggy bank is $7.80. Write a linear equation to represent the number of nickels and dimes Brielle has in her piggy bank.
a. Define your variables
b. Write the equation to model the situation.
y =
c. If Brielle has 60 nickels, how many dimes does she have in her piggy bank.

(if f(x)=4x^2 and g(x)=x+1, find (f o g)(x)

Aswimming pool measures 22ft by 12ft and is 4ft deep. if the pool is being filled at 2.5 cubic ft per minute, how long will it take to fill the pool?

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.