Solve using matrices.5x - y + 5z = 163x + 7z = 237y + z = 65
A. (3, 9, 2)
B. No Solution
C. (3, 2, 9)
D. (-3, 9, 6)
Answer: A
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Graph the function.y = -tan (x - ?)
A. 
B. 
C. 
D. 
Solve the problem.The students at ABC School are selling tickets for their carnival. Each ticket sells for 50¢. The school wants to raise $7500 in ticket sales. How many tickets must the school sell to reach its goal of $7500?
A. 150,000 B. 3750 C. 15,000 D. 1500
Find the inventory values using (a) the weighted-average method, (b) the FIFO method, and (c) the LIFO method. Round to the nearest dollar.PurchasesNow in InventoryBeginning inventory: 100 units at $1.64May: 150 units at $2.68August: 250 units at $1.26October: 220 units at $3.41550 units
A. (a) $1631 (b) $902 (c) $1876 B. (a) $1236 (b) $1280 (c) $1052 C. (a) $1246 (b) $1052 (c) $1280 D. (a) $1246 (b) $1280 (c) $1052
Determine the constant of variation for the stated condition.y varies directly as x, and y = 7 when x = 49.
A. k = 7
B. k = 8
C. k = 
D. k = 42