Factor completely.20x2 - 31xy + 12y2
A. (4x + 3y)(5x + 4y)
B. (20x + 3y)(x + 4y)
C. (4x - 3y)(5x - 4y)
D. (4x + 3y)(5x - 4y)
Answer: C
Mathematics
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Solve the systems of equations by the addition method. 
A. {(0,0)}
B. {(-6, 4)}
C. infinitely many solutions; {
-6x + 4y = -6} or {
12y = -18 + 18x}
D. no solution; ?
Mathematics
Solve the problem.A state park charges
per day or fraction of a day to rent a tent site, plus a fixed 
park maintenance fee. Let T(x) represent the cost to stay in a tent site for x days. Find 
A. $52.00 B. $56.00 C. $69.00 D. $60.33
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Solve.A certain drug comes in 1500-mg pills. How many of these pills do you have to take to get a dosage of half a gram?
A. 4 pills
B. 
pill
C. 
pill
D. 3 pills
Mathematics
Evaluate the expression according to the order of operations.75 - 3 ? 5 ? 2
A. 120 B. 720 C. 45 D. 65
Mathematics