Simplify the expression by combining like terms.
z2 - 9z2 - 10z2
A. 21z4
B. 21z2
C. 
z2
D. 
z4
Answer: C
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Decide whether or not matrix A and matrix B are inverses.A = 
and B = 
A. Yes B. No
Evaluate the expression.
A. 
B. 
C. 
D. 
Analyze the graph of the given function f as follows:(a) Determine the end behavior: find the power function that the graph of f resembles for large values of |x|.(b) Find the x- and y-intercepts of the graph.(c) Determine whether the graph crosses or touches the x-axis at each x-intercept.(d) Graph f using a graphing utility.(e) Use the graph to determine the local maxima and local minima, if any exist. Round turning points to two decimal places.(f) Use the information obtained in (a) - (e) to draw a complete graph of f by hand. Label all intercepts and turning points.(g) Find the domain of f. Use the graph to find the range of f.(h) Use the graph to determine where f is increasing and where f is decreasing.f(x) = (x - 3)(x - 1)(x + 2)
What will be an ideal response?
Determine the phase shift of the function.y = -2 cos 
A. -?
B. 
C. - 
D. 2?