Factor by grouping.x3 + 5x2 + 3x + 15
A. (x2 + 3)(x - 5)
B. (x3 + 3)(x + 5)
C. (x2 + 3)(x + 5x)
D. (x2 + 3)(x + 5)
Answer: D
Mathematics
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Solve the problems.A 6-ft. board is cut into 2 pieces so that one piece is 2 feet longer than 3 times the shorter piece. If the shorter piece is x feet long, find the lengths of both pieces.
A. shorter piece: 16 ft; longer piece: 18 ft B. shorter piece: 3 ft; longer piece: 18 ft C. shorter piece: 1 ft; longer piece: 5 ft D. shorter piece: 6 ft; longer piece: 20 ft
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Write the improper fraction as a mixed number or an integer.
A. 3
B. 1
C. 2
D. 2
Mathematics
Use the properties of real numbers to simplify the expression.2(3x + 3) - 4(3x - 1)
A. -6x + 10 B. 18x + 10 C. -6x - 10 D. -6x + 2
Mathematics