Solve the problem.A sum of money amounting to $4.50 consists of dimes and quarters. If there are 30 coins in all, how many are quarters?
A. 22 quarters
B. 10 quarters
C. 15 quarters
D. 20 quarters
Answer: B
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Use the Egyptian method of doubling to calculate the product.6 × 83
A. 498 B. 510 C. 492 D. 474
Solve for the missing numbers. Markup is based on selling price. Round dollar amounts to the nearest cent.
100% S $10.41
A. 
100% S $ 10.41
B. 
100% S $ 10.41
C. 
100% S $ 10.41
D. 
100% S $ 10.41
Determine if the type of relation is linear, nonlinear, or none.
A. none B. nonlinear C. linear
Solve the problem.An economy has three sectors: labor, transportation, and food industries. Suppose the demand on 1 dollar in labor is 35 cents for transportation and 15 cents for food, the demand on 1 dollar in transportation is 55 cents for labor and 27 cents for transportation, and the demand on 1 dollar in food production is 55 cents for labor, 5 cents for transportation, and 33 cents for food. Outside consumer demand for the current production period is 12,000 dollars for labor, 21,000 dollars for transportation, and 12,000 dollars for food. Write an augmented matrix for this economy.
A. 
B. 
C. 
D. 