Use a percent proportion to answer the question.155 retail stores is 31% of what number of retail stores?
A. 5000 retail stores
B. 500 retail stores
C. 20 retail stores
D. 0.2 retail stores
Answer: B
Mathematics
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If a $872 item depreciates in value by $109 per year, how many years will it take the item to depreciate to a value of zero dollars?
A. 4 years B. 5 years C. 7 years D. 8 years
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Find the derivative of the function.y = 
A. y ' = 
B. y ' = 
C. y ' = 
D. y ' = 
Mathematics
Evaluate the expression.Sixteen more than four
A. 20 B. 22 C. 12 D. 64
Mathematics
Solve the problem.A student took out two loans totaling $9000 to help pay for college expenses. One loan was at 8% simple interest, and the other was at 9%. After one year, the student owed 
in interest. Find the amount of the loan at 9%.
A. $3000 B. $480 C. $270 D. $6000
Mathematics