Find the constant of variation and construct the function that is expressed in each statement.y varies directly as x: y = 15, when x = 4
A. y = 15x
B. y = 3.75y
C. y = 3.75x
D. y = 0.27x
Answer: C
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Subtract.74,705 - 7168
A. 71,537 B. 75,357 C. 67,837 D. 67,537
Use synthetic division and the Remainder Theorem to find the indicated function value.f(x) = 4x4 + 10x3 + 2x2 - 6x + 43; f(-2)
A. 103 B. 81 C. 98 D. 47
Solve the problem.The concentration of a drug in the bloodstream, measured in milligrams per liter, can be modeled by the function, 
where t is the number of minutes after injection of the drug. When will the drug be at its highest concentration? Approximate your answer rounded to two decimal places.
A. t = 3.65 minutes after the injection is given B. t = 4 minutes after the injection is given C. at the time of injection D. t = 0.55 minutes after the injection is given
Let a and b be the lengths of the legs of a right triangle, and let c be the length of the hypotenuse. Values of two of the three lengths are given. Find the third length.a = 6, b = 6
A. c = -6
B. c = 6
C. c = 72
D. c = 2