Match the function with its graph.1) y = sin x2) y =  cos x3) y =  sin x4) y = cos xA) B) 

/>  C) D)  



A. 1B, 2D, 3C, 4A

B. 1A, 2B, 3C, 4D

C. 1A, 2C, 3D, 4B

D. 1A, 2D, 3C, 4B

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Answer: A

Mathematics

Perform the indicated operations. Reduce answers to lowest terms and write any improper fractions as whole or mixed numbers. + 

A.
B.
C.
D.

Solve the equation. = 1 - 

A. ? B. {0, 7} C. {1, 5} D. {0, -5}

Perform the indicated operations and simplify the result. Leave the answer in factored form.

A. - 
B. -1
C.
D. - 

Determine the number that should be added to complete the square of the expression. Then factor the expression.x2 + 8x

A. -16; (x + 4)2   B. 16; (x + 4)2   C. -16; (x - 4)2   D. 16; (x - 4)2