Factor as completely as possible. If unfactorable, indicate that the polynomial is prime.x2 + 26x + 27
A. (x + 27)(x - 1)
B. Prime
C. (x + 9)(x - 3)
D. (x - 9)(x + 3)
Answer: B
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Solve the problem.The function A = A0e-0.00693x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault. If 800 pounds of the material are initially put into the vault, how many pounds will be left after 160 years?
A. 519 pounds B. 250 pounds C. 640 pounds D. 264 pounds
The point P(x, y) on the unit circle that corresponds to a real number t is given. Find the values of the indicated trigonometric function at t.
?Find csc t.
A. 
B. - 
C. - 
D. 
Identify the intervals where the function is changing as requested.Increasing
A. (-2, -1) or (3, ?) B. (-2, 1) C. (-1, ?) D. (-1, 3)
Find the zeros of the polynomial function. State whether the graph crosses the x-axis, or touches the x-axis and turns around, at each intercept. f(x) = (x - 2)2(x2 - 25)
A. x = 2, touches the x-axis and turns around; x = -5, touches the x-axis and turns around; x = 5, touches the x-axis and turns around B. x = 2, touches the x-axis and turns around; x = 25, touches the x-axis and turns around C. x = 2, touches the x-axis and turns around; x = -5, crosses the x-axis; x = 5, crosses the x-axis D. x = -2, touches the x-axis and turns around; x = 25, crosses the x-axis