Find the reference angle for the given angle.- 
A. 
B. 
C. 
D. 
Answer: C
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Solve the problem. Round to tenths where necessary.P(x) = -x3 + 12x2 - 36x + 400, x ? 3 is an approximation to the total profit (in thousands of dollars) from the sale of x hundred thousand tires. Find the number of hundred thousands of tires that must be sold to maximize profit.
A. 6 hundred thousand B. 7 hundred thousand C. 3 hundred thousand D. 2 hundred thousand
Perform the indicated operations and simplify the result. Leave the answer in factored form.
÷ 
A. (x - 5)(x - 3)
B. 
C. 
D. 
Write the number in scientific notation.5,600,000
A. 5.6 × 106 B. 5.6 × 105 C. 5.6 × 10-6 D. 5.6 × 10-5
Match the given function to its graph.1) y = 1 + sin x2) y = 1 + cos x3) y = -1 + sin x4) y = -1 + cos xAB
?
CD
?
A. 1A, 2D, 3C, 4B B. 1A, 2C, 3D, 4B C. 1B, 2D, 3C, 4A D. 1A, 2B, 3C, 4D