Factor completely.2x2 + 7x - 15
A. (2x - 5)(x + 3)
B. (2x + 5)(x - 3)
C. (2x - 3)(x + 5)
D. (2x + 3)(x - 5)
Answer: C
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Express the relationship between a small change in x and the corresponding change in y in the form 
.y = 8x2 - 7x + 7
A. dy = (16x - 7) dx B. dy = 16x - 14 dx C. dy = 16x + 7 dx D. dy = 16x dx
Find the probability of the event.A coin and a six-sided die are tossed. What is the probability of getting tails and a number less than or equal to 1?
A. 
B. 0
C. 
D. 
Solve the system of equations.
A. x = 2 - 5z, and y = 3z - 1, where z is any real number
or {(x, y, z) |x = 2 - 5z, and y = 3z - 1, where z is any real number}
B. x = 2 + 7z, and y = -3z - 1, where z is any real number
or {(x, y, z) |x = 2 + 7z, and y = -3z - 1, where z is any real number}
C. x = 1 - 5z, and y = 3z - 
, where z is any real number
or 
D. x = -2 - 7z, and y = -3z -1, where z is any real number
or {(x, y, z) |x = -2 - 7z, and y = -3z -1, where z is any real number}
Solve the problem.At $12 per ticket, the Casper Coyotes will fill all 6000 seats in the assembly hall. The manager knows that for every $1 increase in the price, 300 tickets will go unsold. Write the number of tickets sold, n, as a function of the ticket price, p. How much money will be taken in if the tickets are $21 each?
A. n(p) = -300p - 6360, -$12,660 B. n(p) = 600p + 4200; $16,800 C. n(p) = -300p + 9600; $3300 D. n(p) = -600p - 15,600; -$28,200