AnswersAlgebra IILinear Programming

Linear Programming — Quiz Answers

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The constraints of a problem are listed. What are the vertices of the feasible region? 2 x plus 3 y is greater than or equal to 12 5 x plus 2 y is greater than or equal to 15 x is greater than or equal to 0 y is greater than or equal to 0

A
open paren 0 comma 4 close paren , open paren 21 over 11 comma 30 over 11 close paren , open paren 3 comma 0 close paren
B
open paren 0 comma 0 close paren , open paren 0 comma 4 close paren , open paren 21 over 11 comma 30 over 11 close paren , open paren 3 comma 0 close paren
C
open paren 0 comma 0 close paren , open paren 0 comma 15 halves close paren , open paren 21 over 11 comma 30 over 11 close paren , open paren 6 comma 0 close paren
D
open paren 0 comma 15 halves close paren , open paren 21 over 11 comma 30 over 11 close paren , open paren 6 comma 0 close paren
2
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A botanist is using two types of plants for an experiment. She writes inequalities to model the constraints on the number of each type of plant she can use. She uses linear programming to find the vertex of the feasible region that results in the minimum value, in dollars, of the cost function. If that vertex is open paren 5 comma 39 close paren , what do the coordinates represent?

A
Buying five of each type of plant costs 39 dollars , which is the lowest possible cost.
B
The lowest possible cost of the plants is 5 dollars , which occurs when a total of 39 plants are bought.
C
The lowest possible cost of the plants is 5 dollars , which occurs when 39 of each type of plant are bought.
D
Buying five of one type of plant and 39 of the other type of plant results in the lowest cost.
4

Alan wants to bake blueberry muffins and bran muffins for the school bake sale. For a tray of blueberry muffins, Alan uses 1 third cup of oil and 2 eggs. For a tray of bran muffins, Alan uses 1 half cup of oil and 1 egg. Alan has 4 cups of oil and 12 eggs on hand. He sells trays of blueberry muffins for 12 dollars each and trays of bran muffins for 9 dollars each. Alan wants to maximize the money raised at the bake sale. Let x represent the number of trays of blueberry muffins and y represent the number of trays of bran muffins Alan bakes. What are the constraints for the problem?

A
1 third x plus 2 y is less than or equal to 12 1 half x plus y is less than or equal to 9 x is greater than or equal to 4 y is greater than or equal to 9
B
1 third x plus 2 y is less than or equal to 12 1 half x plus y is less than or equal to 9 x is greater than or equal to 0 y is greater than or equal to 0
C
1 third x plus 1 half y is less than or equal to 4 2 x plus y is less than or equal to 12 x is greater than or equal to 12 y is greater than or equal to 9
D
1 third x plus 1 half y is less than or equal to 4 2 x plus y is less than or equal to 12 x is greater than or equal to 0 y is greater than or equal to 0
6

The constraints of a problem are listed. What are the vertices of the feasible region? x plus y is less than or equal to 7 x minus 2 y is less than or equal to negative 2 x is greater than or equal to 0 y is greater than or equal to 0

A
open paren 0 comma 1 close paren , open paren 4 comma 3 close paren , open paren 7 comma 0 close paren
B
open paren 0 comma 0 close paren , open paren 0 comma 1 close paren , open paren 4 comma 3 close paren , open paren 7 comma 0 close paren
C
open paren 0 comma 1 close paren , open paren 0 comma 7 close paren , open paren 2 comma 5 close paren
D
open paren 0 comma 1 close paren , open paren 0 comma 7 close paren , open paren 4 comma 3 close paren
7

Dana wants to make two types of dog treats. She has 10 cups of peanut butter and 12 cups of flour. Her dog bone treat recipe uses 3 cups of peanut butter and 2 cups of flour to make one tray. A tray of her oatmeal dog treat recipe uses 1 cup of peanut butter and 4 cups of flour. She plans to sell trays of dog treats at the town festival and charge 6 dollars for a tray of dog bone treats and 7 dollars for a tray of oatmeal treats. Dana wants to maximize her income from selling the dog treats. When writing constraints for the problem, which definition for the variables x and y can be used to determine the maximum?

A
Let x represent the number of dog bone treats made and y represent the number of cups of flour used.
B
Let x represent the number of cups of peanut butter used and y represent the number of trays of dog bone treats made.
C
Let x represent the number of trays of dog bone treats made and y represent number of trays of oatmeal dog treats made.
D
Let x represent the number of cups of peanut butter used and y represent the number of cups of flour used.
9

Which ordered pair minimizes the objective function cap c is equal to 60 x plus 85 y ?

A
open paren 170 comma 0 close paren
B
open paren 80 comma 50 close paren
C
open paren 55 comma 70 close paren
D
open paren 0 comma 160 close paren
10

Which ordered pair maximizes the objective function cap p is equal to 3 x plus 8 y ?

A
open paren 0 comma 0 close paren
B
open paren 2 comma 7 close paren
C
open paren 8 comma 1 close paren
D
open paren 5 comma 6 close paren

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