Graph the function. Show at least one period.y = -4 cos(?x + 5)

A.

B.

C.

D.


Answer: C

Mathematics

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Use the rules of exponents to simplify the expression. Write the answer with positive exponents. Assume that all variables represent positive real numbers.8x8/5(x11/5 - 8x)

A.  - 
B. 8x19/5 - 64x13/5 
C.  - 64x13/5 
D. 8x19/5 - 

Mathematics

Solve the equation on the interval [0, 2?).cos2 x - cos x = 0

A. , ?
B. 0,  , ?, 
C.  , 
D. 0,  , 

Mathematics

Write an equation for a function whose graph fits the given description.The graph of f(x) = x2 is vertically stretched by a factor of 4, and the resulting graph is reflected across the x-axis.

A. f(x) = (x - 4)2 B. f(x) = -4x2 C. f(x) = 4x2 D. f(x) = 4(x - 4)x2

Mathematics

Solve the system of equations by graphing. 

A.
B.
C.
D.
E.

Mathematics