Without using a calculator, determine the system of inequalities needed for the calculator-generated graph.
A. y ? x2 + 2
x ? -2
B. y ? x2 + 2
y ? -2
C. y ? x2 + 2
y ? -2
D. y ? -x2 + 2
y ? 2
Answer: C
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Evaluate or simplify the given expression.cos-1 
A. 
B. - 
C. 
D. 
Use the half-angle formulas to evaluate the given function.sin 75°
A. 1.3660 B. 0.6088 C. 0.9659 D. 0.2588
Solve the problem. Round to the nearest dollar unless otherwise stated.A contractor made the following purchases of door frames:Beginning inventory:24 frames at $19.00June:36 frames at $13.60August:50 frames at $11.00September:17 frames at $23.00Inventory at year end shows that 40 frames remain. Find the inventory value using the weighted average, FIFO, and LIFO methods.
A. Weighted average: $920 FIFO: $644 LIFO: $760 B. Weighted average: $920 FIFO: $644 LIFO: $674 C. Weighted average: $594 FIFO: $644 LIFO: $674 D. Weighted average: $594 FIFO: $920 LIFO: $760
Solve.110% of 394 is what?
A. 4334 B. 433.4 C. 43.34 D. 43,340