Find the matrix product AB, if it is defined.A =
, B = 
.
A. 
B. 
C. 
D. 
Answer: D
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Find the series' radius of convergence.
A. 2 B. ?, for all x C. 0 D. 1
Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local maximum at x = 3; local minimum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3) B. Local minimum at x = 3; local maximum at x = -3 ; concave down on (0, ?); concave up on (-?, 0) C. Local minimum at x = 3; local maximum at x = -3 ; concave up on (0, -3) and (3, ?); concave down on (-3, 3) D. Local minimum at x = 3; local maximum at x = -3 ; concave up on (0, ?); concave down on (-?, 0)
Write a slope-intercept equation for a line with the given characteristics.Passes through (1, 5) and (-6, 8)
A. y = - 
x + 
B. y = - 
x + 
C. y = 
x + 
D. y = 
x + 
Solve the problem.On the October 15 billing date, Jacob had a balance due of $292.31 on his credit card. The transactions during the following month were: 
The interest rate on the card is 1.3% per month. Using the average daily balance method, find the balance due on November 15 (October has 31 days).
A. $606.82 B. $607.71 C. $606.81 D. $606.71