Find the sum.
A. -70
B. 62
C. 2
D. 70
Answer: C
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Solve the problem relating to the Fibonacci sequence.If an 8-inch wide rectangle is to approach the golden ratio, what should its length be?
A. 10 in B. 12 in C. 13 in D. 5 in
Find the area.
A. 24 in.2 B. 128 in.2 C. 256 in.2 D. 64 in.2
Translate the problem to a system of equations; then solve using the elimination method.Walt made an extra $7000 last year from a part-time job. He invested part of the money at 9% APR and the rest at 8% APR. He made a total of $590 in interest. How much was invested at 8%?
A. $3500 B. $4000 C. $3000 D. $5000
Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438 B. 0.487 C. 0.91 D. 0.856