Evaluate the algebraic expression for the given values of the variables.10x - 7y, x = –4 and y = 10
A. 117
B. 110
C. 30
D. –103
E. –110
Answer: E
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A. magnitude of 19.65 with a direction of 41° B. magnitude of 19.65 with a direction of 43.2° C. magnitude of 14.42 with a direction of 41° D. magnitude of 19.65 with a direction of 46.8°
Solve the problem.On a new oak bookcase with a list price of $850, a series discount of 15/20/5 is offered to wholesalers while a series discount of 25/15 is offered to retailers.a) What is the wholesalers price?b) What is the retailer's price?
A. (a) $549.10; (b) $308.13 B. (a) $510.00; (b) $340.00 C. (a) $300.90; (b) $308.13 D. (a) $549.10; (b) $541.88
Assume x and y are functions of t. Evaluate dy/dt.xy + x = 12; 
= -3, x = 2, y = 5
A. 9 B. 3 C. -9 D. -3
A credit card bill due on April 5 showed a balance of $249. The card holder forgot to pay the bill until the 20th of the month, but paid the full amount of $249 at that time. In the mean time, the card was used to make purchases of $134 on the 10th of the month and $74 on the 20th of the month. What was the average daily balance for the billing period? Round to the nearest cent.
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