Simplify the expression. Assume all variables represent positive real numbers.
A. 3y2
B. 
C. y2 - 3
D. 
Answer: D
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Solve the problem.
The graph shows the amount of oil in a 150-gallon tank after x minutes have elapsed. (i) Find the slope-intercept form of the equation of the line. (ii) Use the graph to estimate the x-coordinate of the point 
that lies on the line..
A. y = 15x + 2; (2, 32) B. y = 15x; (2, 30) C. y = -15x; (2, -30) D. y = 15x - 2; (0, 30)
Solve.In a lottery game run by a certain state, for every game ticket purchased, a player can pick any 4 numbers from 1 through 43. If the numbers match those drawn by the state, the player wins. If Martin buys 3 tickets, what is his probability of winning?
A. 
B. 
C. 
D. 
Factor by substitution.5( z - 5)2 - 33( z - 5) - 14
A. ( 5z - 24)( z - 11) B. ( 5z - 23)( z - 12) C. ( 5z - 23)( z + 12) D. ( 5z + 23)( z - 8)
Multiply.-y(4x3 - 9x2y + 5xy2 - 9y3)
A. -4x3y + 9x2y2 - 5xy3 + 9y4 B. -4x3 + 9xy2 - 5xy3 + 9 C. 4x3y - 9x2y2 + 5xy3 - 9y4 D. -4x3 + 9>x2y - 5xy2 + 9y3