Solve the problem.Find the ordinary interest on a loan of $620 at 11% annually made on February 4 and due May 31.
A. $68.20
B. $641.98
C. $21.79
D. $21.98
Answer: D
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Rewrite the expression in terms of exponentials and simplify the results. ln (cosh 10x - sinh 10x)
A. -10x B. -10 C. ln (e10x - e-10x) D. -20x
In order to determine the effects of a new high carbohydrate diet intended to treat depression, a researcher conducts a study. Five hundred inmates in the Middletown prison are selected to participate in the study. The researcher puts the 400 inmates not in solitary confinement on the new diet. The 100 inmates in solitary confinement are given their regular meals. The 400 inmates on the new diet are not aware that they being studied or that their diet has been modified, but have many fewer reported cases of depression after 30 days.Which of the following statements is true?
A. The study is not blind experiment. B. The study is a double-blind experiment. C. The study is a blind experiment, but not a double-blind experiment. D. The study is a double-blind experiment, but not a blind experiment. E. All of these statements are true.
Solve the system of equations by substitution.
A. (7, 0) B. (0, -7) C. (1, -8) D. no solution
State whether the vertex of the function is a maximum or minimum and give the corresponding maximum or minimum value of the function.f(x) = - x2 - 12x - 43
A. minimum: 6 B. minimum: 0 C. maximum: 6 D. maximum: - 7