The Tran family is bringing 15 packages of cheese to a group picnic. Cheese slices cost $ 2.50 per package. Cheese cubes cost $ 1.75 per package. The Tran family spent a total of $ 30 on cheese. How many packages of each type of cheese did the Tran family buy?

cubes.

Step-by-step explanation:

17 cbes I think. not 100% tho

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.