Use the formula for the sum of the first n terms of a geometric sequence to evaluate the sum.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Evaluate the integral.
dt
A. -cos 
+ C
B. - 
cos 
+ C
C. 
cos 
+ C
D. 6 cos 
+ C
Mathematics
Let Q represent a mass of radioactive plutonium 
(in grams), whose half life is 24,100 years. The quantity of plutonium present after t years is 
Determine the quantity present after 67,000 years. Round your answer to one decimal place.
a. 4.3 g b. 3.3 g c. 5.3 g d. 2.3 g
Mathematics
Provide an appropriate response. You save $12,000 at 7% for one year. Federal taxes take 15% of the interest earned. By what percent did your investment actually grow?
A. 5.95% B. 22% C. 8% D. 10.5%
Mathematics
Divide, if possible. If not possible, write "not defined."3115 ÷ 6
A. 520 B. 519 R5 C. 519 R1 D. 519
Mathematics