Solve the problem.An airline charter service charges a fare per person of $200 plus $20 for each unsold seat. The airplane holds 200 passengers. Let x represent the number of unsold seats and write an expression for the total revenue R for a charter flight.
A. R(x) = (200 - x)(200 + 20x) or 40,000 + 4,000x - 20x2
B. R(x) = (200 - x)(200 + 20x) or 40,000 + 3,800x - 20x2
C. R(x) = 200(200 + 20x) or 40,000 + 4,000x
D. R(x) = x(200 + 20x) or 200x + 20x2
Answer: B
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Find the expected value.You are given 14 to 1 odds against drawing two hearts when two cards are selected at random from a standard deck of 52 cards (with replacement of the first card before the second card is drawn). This means that you win $14 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game. Round to the nearest cent.
A. $2.75 B. -$0.06 C. $0.06 D. -$0.91
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Solve the problem.Find the 11th term of the following geometric sequence:6, 6
, 12, 12
, . . .
A. 96
B. 192
C. 384
D. 192
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-2
A. 
B. 
C. 
D. 