a customer pays an annual membership fee of $85 to a neighborhood car wash. each time he takes his car to the car wash, he pays only $7. the total amount of money he spends at the car wash in one year in dollars can be founded using the function y = 7x + 85. what does the variable x represent in this function?​

(a) the volume of the cone is 20/3 in3

hence, option a is correct.

1 number

if we use a graphing calculator, there is only one such number that satisfies the conclusion of the mean value theorem, that is, a number such that

where the right-hand side is the average rate of change of f on the interval [0.5,0.75], which is the slope of the secant line.

in the attached graph, the black line is the secant line which has its slope as the average rate of change of f on [0.5,0.75], while the orange line is the only tangent line to the graph of f in the interval that satisfies the mvt conclusion.