Use the formula for Sn to find the sum of the first five terms of the geometric sequence.
, 
, 
, 
, . . .
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.You are playing a game in which a single die is rolled. If a 2 or a 5 comes up, you win $48, otherwise you lose $3. What is the price that you should pay to play the game that would make the game fair?
A. $15 B. $7.50 C. $13 D. $14
Solve the problem.Since 2001, electronic payments made to an online company have increased exponentially.
Let f(t) be the number of electronic payments in the year that is t years since 2006. A possible equation of f is 
Predict the number of electronic payments that will be made in 2020.
A. 467 thousand B. 1269 thousand C. 3449 thousand D. 23 thousand
Solve the problem.A man has $298,000 invested in three rental properties. One property earns 8.5% per year on the investment, a second earns 11%, and the third earns 7%. The annual earnings from the the properties total $17,000. Write a system of two equations to represent the problem with x, y, and z representing the 8.5%, 11%, and 7% investments, respectively.
A. 
B. 
C. 
D. 
Use the given information to find the exact value of the expression.sin ? = 
, ? lies in quadrant I, and cos ? = 
, ? lies in quadrant I
Find cos (? + ?).
A. 
B. 
C. 
D. 