Bryan needs to mail cards and packages and wants to keep the mailing costs to no more than $500. The number of cards is at least 4 more than twice the number of packages. The cost of mailing a card (with pictures enclosed) is $3 and for a package the cost is $7. Show your work for each part. a. Write a system of inequalities to model this situation. b. Graph the system. c. Can he mall 60 cards and 26 packages? d. Can he mail 90 cards and 40 packages?​

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step-by-step explanation:

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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.

69.64%

step-by-step explanation: