Write the expression with positive exponents. Then simplify if possible.-5z-3
A. 
B. 
C. - 
D. - 
Answer: C
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Use the graph of population change per year for a metro area to answer the question. 
What is the difference of the 1998 and 1997 population changes?
A. 3797 B. 4843 C. -4843 D. -3797
Solve the problem.A textile company has specific dyeing and drying times for its different cloths. A roll of Cloth A requires 55 minutes of dyeing time and 45 minutes of drying time. A roll of Cloth B requires 70 minutes of dyeing time and 25 minutes of drying time. The production division allocates 2220 minutes of dyeing time and 1300 minutes of drying time for the week. How many rolls of each cloth can be dyed and dried?
A. 2 rolls of Cloth A, 47 rolls of Cloth B B. 20 rolls of Cloth A, 16 rolls of Cloth B C. 13 rolls of Cloth A, 38 rolls of Cloth B D. 9 rolls of Cloth A, 30 rolls of Cloth B
Use the rules for exponents to rewrite the expression and then evaluate the new expression. 
A. -14 B. -5 C. 0 D. 1
Determine if the sequence is geometric. If the sequence is geometric, find the common ratio.12, 6, 3, 1.5, 0.75, . . .
A. no B. yes, 0.5 C. yes, 0.75 D. yes, 2