Simplify.54 + (-65) + 120 - (-25) - 97
A. 37
B. 231
C. 167
D. -13
Answer: A
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and the lines 
and 
A. 
B. 
C. 
D. 
Some mathematics professors would like to purchase a $350 microwave oven for the department workroom. If 2 of the professors don't contribute, everyone's share will increase by $20. How many professors are in the department? ?
A. 21 B. 7 C. 26 D. 9 E. 14
Determine the domain and range of the relation.{(5, -2), (-6, -8), (2, -7), (3, -9), (10, 2)}
A. Domain: {-6, -2, 10, -8, 3}; Range: {-7, 5, -9, 2, 2} B. Domain: {-7, 5, -9, 2, 2}; Range: {-6, -2, 10, -8, 3} C. Domain: {-2, -8, -7, -9, 2}; Range: {-6, 10, 3, 5, 2} D. Domain: {-6, 10, 3, 5, 2}; Range: {-2, -8, -7, -9, 2}
Solve the problem.If the average cost per unit C(x) to produce x units of plywood is given by 
what is the unit cost for 20 units?
A. $5.00 B. $1.50 C. $10.00 D. $15.00