Find the difference.-7 - (-22)
A. 29
B. 15
C. -15
D. -29
Answer: B
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Determine whether the graph is that of a function.
A. function B. not a function
Find the focus and directrix of the parabola with the given equation.11x2 = 28y
A. Focus: 
, directrix: y = - 
B. Focus: 
, directrix: y = 
C. Focus: 
, directrix: x = - 
D. Focus: 
, directrix: y = - 
Graph the line, finding intercepts to determine two points on the line.5x - 30y = 30
A. x: (6, 0); y: (0, -1)
B. x: (-1, 0); y: (0, 6)
C. x: (1, 0); y: (0, -6)
D. x: (-6, 0); y: (0, 1)
If x is the net gain to a player in a game of chance, then E(x) is usually negative. This value gives the average amount per game the player can expect to lose over the long run. A service organization is selling $2 raffle tickets as part of a fundraising program. The first prize is a boat valued at $2910, and the second prize is a camping tent valued at $400. In addition to the first and second prizes, there are twenty $24 gift certificates to be awarded. The number of tickets sold is 3000. Find the expected net gain to the player for one play of the game. Round your answer to the nearest cent. ?
A. ?$1,109.33 B. ?$1.34 C. ?$0.74 D. ?-$0.74 E. ?-$1,109.33