Simplify the expression by combining like terms, if possible.-3(10r + 2) + 5(2r + 3)
A. -20r + 9
B. 7r - 1
C. -36r
D. -20r + 2
Answer: A
Mathematics
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Divide. Write with positive exponents.
A. 10x + 2
B. 5x - 10x5 + 
C. 5x + 2 + 
D. 5x + 2
Mathematics
Write using radical notation. Then, simplify, if possible.(-32x20)2/5
A. 4x4 B. 4x8 C. 4x2 D. -32x4
Mathematics
Solve the problem.The volume V of a gas at constant temperature varies inversely as the pressure P on it. The volume of a gas is 
under a pressure of 
What will be its volume under a pressure of 40 kg/cm2?
A. 340 cm3 B. 85 cm3 C. 357 cm3 D. 77 cm3
Mathematics
Graph the inequality.y ? 4x - 4
A. 
B. 
C. 
D. 
Mathematics