Find the indicated sum. Find the sum of the first 7 terms in the geometric series 
- 
+ 
- . . .
A. - 
B. 
C. - 
D. 
Answer: D
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Write the first five terms of the sequence {an}.a1 = 3, an + 1 = 
A. 3, 
, -3, - 
, 3
B. -3, 
, 3, - 
, -3
C. 3, - 
, 3, - 
, 3
D. 3, - 
, -3, 
, 3
Construct a truth table to determine when the lightbulb is on. That is, determine which switches must be open and which switches must be closed for the lightbulb to be on. 
A. The lightbulb will be on when p, q, and r are all closed; when p and q are closed and r is open; or when p and r are closed and q is open.
B. The lightbulb will be on when p, q, and r are all closed; when p and q are closed and r is open; when p and r are closed and q is open; or when p is closed and q and r are open.
C. The lightbulb will be on in all cases except when p and r are open and q is closed.
D. The lightbulb will be on when p and r are closed and q is open.
Evaluate the determinant.
A. 
B. -2
C. 0
D. 2
Solve the problem.In Little League, Andrew hit 4 home runs in 40 at-bats. What percent of the at-bats were home runs?
A. 8% B. 10% C. 20% D. 15%