Identify the numerator and the denominator of the fraction.
A. numerator: 
; denominator: 1
B. numerator: 7; denominator: 1
C. numerator: 5; denominator: 2
D. numerator: 2; denominator: 5
Answer: D
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Solve the problem.The mathematical model C = 700x + 40,000 represents the cost in dollars a company has in manufacturing x items during a month. How many items were produced if costs reached $250,000?
A. 243 items B. 414 items C. 249,300 items D. 300 items
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(-5x3)-1
A. 
B. 
C. - 
D. - 
Write the complex number in trigonometric form r(cos ? + i sin ?), with ? in the interval [0°, 360°).-9 + 12i
A. 15(cos 53.1° + i sin 53.1°) B. 15(cos 233.1° + i sin 233.1°) C. 15(cos 306.9° + i sin 306.9°) D. 15(cos 126.9° + i sin 126.9°)
Solve.- 
= 2x - 
- x
A. 
B. 
C. 
D. 