Find the volume of the figure. (Use ? ? 3.14 and round as directed in parentheses.)
A. 1500 in.3
B. 1300 in.3
C. 1400 in.3
D. 1200 in.3
Answer: B
Mathematics
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Multiply or divide as indicated. Write the answer in lowest terms.
÷ 
A. 
B. 
C. 
D. 
Mathematics
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) = 200e-0.227t, where t is the time in years? Round to the nearest hundredth year.
A. 23.34 yr B. 3.05 yr C. 45.40 yr D. 26.39 yr
Mathematics
Use common or natural logarithms to solve the exponential equation symbolically.2(x - 1) = 16
A. x = 
+ 1
B. x = 1 + 
C. x = - 
- 1
D. x = 
- 1
Mathematics
Solve the equation. Express radicals in simplest form.2x2 - 98 = 0
A. 7 B. ±7 C. 51.5 D. ±8
Mathematics