Decide whether or not the ordered pair is a solution of the system.(-4, 3)x + y = 7x - y = 1
A. No
B. Yes
Answer: A
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Solve the problem.Find the area of the region in the first quadrant between the curve y = e-3x and the x-axis.
A. 1
B. 3
C. 
D. 
e
Determine whether the indicated ordered pair lies on the graph of the given equation.y = |x|, (3, -3)
A. Yes B. No
Add or subtract as indicated. If terms are not like radicals and cannot be combined, so state. Assume all variables represent nonnegative real numbers.27
- 12
A. 15
B. 39
C. 30
D. 15
Solve the problem.The revenue achieved by selling x graphing calculators is figured to be 
dollars. The cost of each calculator is 
How many graphing calculators must be sold to make a profit (revenue - cost) of at least $123.50?
A. {x ? 17 < x < 23} B. {x ? 15 < x < 17} C. {x ? 14 < x < 18} D. {x ? 13 < x < 19}