Express the percent as a fraction or mixed number in simplest form.280%
A. 2
B. 
C. 1
D. 5
Answer: A
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Completely factor the polynomial or state that the polynomial is prime.x2 - x - 56
A. (x + 7)(x - 8) B. prime C. (x + 8)(x - 7) D. (x + 1)(x - 56)
Solve using the addition principle.-12 = 27 + f
A. 39 B. -15 C. -39 D. 15
Solve.Find the total of 79, 28, 5, 16, and 356.
A. 479 B. 484 C. 128 D. 405
Solve the problem.A drug is injected into the bloodstream of a patient through her right arm. The concentration of the drug, C(t) (in milligrams per cubic centimeter), in the blood stream of the left arm t hours after the injection is given by 
What is the average concentration of the drug in the bloodstream of the left arm during the first two hours after the injection?
A. 0.121 milligrams per cubic centimeter B. 0.241 milligrams per cubic centimeter C. 0.344 milligrams per cubic centimeter D. 0.060 milligrams per cubic centimeter