7) The total cost for producing x Spikeball sets per day is-x + 8x + 20 dollars, and at this production level each set can be sold for (23 –x) dollars. How many sets should be produced per day to maximize profit? Assume that every set produced is sold. Solution? The profit is (total revenue) – (total production cost). The total revenue is the sale price per set multiplied by the number of sets sold: 23x –x? = 23x –x? - Gx² + 8x + 20) = -x² + 15x – 20 3 x3 15x? |-x² + 15x – 20 dx = 20x + c 2 If we graph this, regardless of the value of c, the local maximum value occurs when x = 18.5, so we say x = 19 as x must be an integer number of Spikeball sets.

Q: Solve the following equ by isolating for the var -3r + 1 r - = [?] 7

A: Topic:- algebra

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.