Solve for real roots.x2/3 + 4x1/3 - 5 = 0
A. x = -5, 1
B. x = -1, 5
C. x = -125, 1
D. x = -1, 125
Answer: C
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Write a formula for the nth term of the arithmetic sequence. Use the formula to find the 20th term of the sequence.10, 1 , -8, -17, . . .
A. an = 9n - 19; a20 = 161 B. an = -9n + 10; a20 = -170 C. an = -9n + 19; a20 = -161 D. an = 9n - 10; a20 = 170
Factor completely using the trial and error method to factor trinomials. If unfactorable, indicate that the polynomial is prime.9x2 - 39x - 30
A. prime B. (9x + 6)(x - 5) C. 3(3x + 2)(x - 5) D. 3(3x - 2)(x + 5)
The graph of a one-to-one function f is given. Sketch the graph of the inverse function f-1, on the same set of axes. Use a dashed line for the inverse.
A. 
B. 
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D. 
Decide whether the statement is true or false. If it is false, tell why.If k is a prime number, then x2 = k will have two rational solutions.
A. True B. False; the solutions will be irrational because a prime number cannot be a perfect square. C. False; the equation will have no real number solutions.