In order to answer the given question, which of the following types of study would be the most appropriate: an experiment without blinding, an experiment with single blinding, an experiment with double blinding, an observational study, or a case-control study?Can acupuncture relieve anxiety? [The level of anxiety at any given time will be determined by interviewing the patient. The interviewer will be a person other than the acupuncturist.]
A. Experiment without blinding
B. Case-control study
C. Observational study
D. Experiment with double blinding
E. Experiment with single blinding
Answer: D
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Give the prime factorization of the number. Use exponents when possible.4725
A. 33 x 52 x 7 B. 34 x 7 C. 54 x 7 D. 32 x 53 x 7
Solve the problem.
An investment of $13,335 earns 12% interest compounded monthly for 3 years. (a) What is the future value of the investment? (b) If money can be deposited at 8% compounded quarterly, find the present value of the investment.
A. (a) $19,079.32 (b) $15,043.85 B. (a) $18,890.40 (b) $8113.76 C. (a) $20,079.32 (b) $9113.76 D. (a) $15,026.21 (b) $7495.86
Evaluate the expression for the given values. If necessary, round to the nearest tenth.3x + 7y + 8; x = 2, y = 9
A. 49 B. 74 C. 77 D. 21
Multiply and then, if possible, simplify by factoring.
A. 
B. 5x
C. 25x
D. 5