Solve the problem.The half-life of aspirin in a person's bloodstream is about 15 minutes. If a person's bloodstream contains 256 milligrams of aspirin, how much of that aspirin will remain after 105 minutes?
A. 2 mg
B. 36.571 mg
C. 1 mg
D. 4 mg
Answer: A
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Find the absolute extreme values of the function on the interval.f(x) = 2x2/3, -27 ? x ? 8
A. absolute maximum is 18 at x = -27 ; absolute minimum is 0 at x = 0 B. absolute maximum is 9 at x = -27 ; absolute minimum is 0 at x = 0 C. absolute maximum is 8 at x = 8 ; absolute minimum is 0 at x = 0 D. absolute maximum is 18 at x = -27 ; absolute minimum is 8 at x = 8
Write as a percent. Round to the nearest tenth of a percent.
A. 1.3% B. 12.5% C. 15.6% D. 80%
Graph the quadratic function using its vertex, axis of symmetry, and intercepts.f(x) = -x2 + 4x + 5
A. vertex (2, 9)
intercepts (5, 0), (- 1, 0), (0, 5)
B. vertex (-2, -9)
intercepts (-5, 0), (1, 0), (0, -5)
C. vertex (2, -9)
intercepts (5, 0), (- 1, 0), (0, -5)
D. vertex (-2, 9)
intercepts (-5, 0), (1, 0), (0, 5)
Approximate to the nearest hundredth.71/3
A. 1.91 B. 2.91 C. -21 D. 2.65