Use a proportion to solve the problem.A math teacher claims that the students' test scores are directly proportional to the amount of time spent studying. Amy studies 14 hours for a test and gets a score of 70. At this rate, how many hours would she have to study to get a score of 83?
A. 27 hr
B. 16.6 hr
C. 17.43 hr
D. 11.81 hr
Answer: B
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By calculating an appropriate number of terms, determine if the series converges or diverges. If it converges, find the limit L and the smallest integer N such that 
for 
otherwise indicate divergence.an = 
A. L = 0, N = 5
B. L = 
, N = 8
C. L = 
, N = 6
D. diverges
Solve the problem.How long will it take a sample of radioactive substance to decay to half of its original amount, if it decays according to the function A(t) = 650e-0.189t, where t is the time in years? Round your answer to the nearest hundredth year.
A. 37.94 years B. 122.85 years C. 3.67 years D. 34.27 years
Use division properties of one and zero to quickly determine the quotient, or state that the expression is undefined.0 ÷ 34
A. 34 B. Undefined C. 0 D. 1
Solve the equation.
- 
= 3
A. -2 B. 2, 38 C. 3, 8 D. 2