Ms. Marner purchased a conference table and chairs for $1,860.00 before discount and taxes. Ms. Kim purchased cubicles for $5,775.00 before discount and taxes. The tax rate is 8.2%. After taxes, Ms.
received the greater percent decrease of
% because of the sale. The difference between the percent decrease that each shopper received after taxes is
%.

answer

Step-by-step explanation:

(-5,-28)

i graphed to on desmos.

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.