Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $51.20?
A. {x ? 8 < x < 32}
B. {x ? 9 < x < 7}
C. {x ? -2 < x < 22}
D. {x ? 10 < x < 30}
Answer: A
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The LCM of 20, 45 and 50 is:
a. 200 b. 450 c. 500 d. 900 e. 45,000
Find the unknown degree measure (to the nearest whole degree) for the sector of a circle's graph showing the distribution of bachelor's degrees conferred in math, science and engineering. Bachelor's Degrees Conferred in Math, Science, and Engineering
A. 108° B. 118° C. 113° D. 98°
Solve the problem.The batting averages of some of the players on the company softball team are 
/> and 
What is the mean of the batting averages of these players? Round to the nearest thousandth.
A. 0.258
B. 0.284
C. 0.298
D. 0.331
Write the phrase as an algebraic expression and simplify if possible. Let x represent the unknown number.One-half a number, minus six, plus two times the number.
A. 
x - 6 + 2x
B. 
x - 6
C. 
x - 4
D. 
x - 3