Simplify the algebraic expression by collecting and combining like terms.2(7x - 4) - 3(x - 2)
A. 11x - 2
B. 8x - 2
C. 11x - 6
D. 11x - 14
Answer: A
Mathematics
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Solve the equation by completing the square.x2 + 15 = -12x
A. {6 + 
}
B. {-6 ± 
}
C. {-12 + 
}
D. {6 ± 
}
Mathematics
Find the domain of the composite function f ? g.f(x) = 
; g(x) = 
A. {x 
B. {x 
C. {x 
D. {x 
}
Mathematics
Divide the expression. You may want to use the property 
= 
+ 
. Do not use a calculator.
A. 3x8 - 9x4 B. 3x8 + 45x7 C. -6x15 D. -15x11 - 9x4
Mathematics
Solve the problem.In 1980 the world use of oil was 5,000,000,000 barrels and the demand for oil was growing exponentially at the rate of 15% per year. If the demand for oil continues at this rate, how many barrels of oil will the world use from 1980 to 2000?
A. 428 billion barrels B. 267 billion barrels C. 98 billion barrels D. 636 billion barrels
Mathematics