Use the two steps for solving a linear programming problem to solve the problem.A doctor has told a sick patient to take vitamin pills. The patient needs at least 28 units of vitamin A, at least 7 units of vitamin B, and at least 20 units of vitamin C. The red vitamin pills cost 
each and contain 6 units of A, 1 unit of B, and 2 units of C. The blue vitamin pills cost 
each and contain 4 units of A, 1 unit of B, and 5 units of C. How many pills should the patient take each day to minimize costs?
A. 5 red and 2 blue
B. 7 red and 0 blue
C. 2 red and 5 blue
D. 6 red and 1 blue
Answer: A
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Solve.The MetroCity clothing company is planning to produce a new jacket. For the first year, the fixed costs for setting up production are $9000. The variable costs for producing each jacket are $34. The revenue for each jacket is $130. Find the total cost C(x) of producing x jackets.
A. C(x) = 9000x + 34x B. C(x) = 9000 + 34x C. C(x) = 9000 + 96x D. C(x) = 34x
Identify the base used in the computation.
= 42
A. Base ten B. Base five C. Base four D. Base six
Write the vector in the form ai + bj. 
A. 9i + 2j B. -2i + 9j C. 9i - 2j D. 2i + 9j
Factor.15x3y4z3 - 10x6y2z5
A. x3y2z3(15y2 - 2x3z5) B. 5x3y2z8(3y2 - 2x3z2) C. 5x3y2z3(3y2 - 2x3z2) D. 5x3y2z3(3y4 - 2x3z5)