Use a calculator to find a graphical solution to the equation. Express results to the nearest thousandth.x2 + 9x = -7
A. -0.86, -8.14
B. 0.72, -9.72
C. -5.36, -5.36
D. 8.14, 0.86
Answer: A
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Solve the problem.The amount of a certain drug in the bloodstream is modeled by the function 
, where y0 is the amount of the drug injected (in milligrams) and t is the elapsed time (in hours). Suppose that 10 milligrams are injected at 10:00 A.M. If a second injection is to be administered when there is 1 milligram of the drug present in the bloodstream, approximately when should the next dose be given? Express your answer to the nearest quarter hour.
A. 5:45 P.M B. 12:30 P.M C. 3:45 P.M D. 5: 30 P.M
Use the change of base formula and a calculator to approximate the logarithmic expression. Round your answer to four decimal places.log325
A. 0.3476 B. 1.1093 C. 3.2261 D. 2.9299
Determine the number of triangles ABC possible with the given parts.a = 24, b = 21, A = 47°
A. 2 B. 0 C. 1 D. 3
Simplify the radical expression by factoring out the largest perfect nth power. Assume that all variables are positive.
A. -2a2b
B. 2
C. 2ab
D. 2ab