Factor completely. If the polynomial cannot be factored, write "prime."2x2 + 2xy - 40y2
A. (2x + 8y)(x - 5y)
B. 2(x + 4y)(x - 5y)
C. 2(x - 4y)(x + 5y)
D. (x - 4y)(2x + 10y)
Answer: C
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How is 247,000 expressed in scientific form?
a. 2.47 ð 102 b. 2.47 ð 103 c. 2.47 ð 104 d. 2.47 ð 105 e. 2.47 ð 106
Answer the question.How can the graph of f(x) = 0.5?-x? - 10 be obtained from the graph of y = ?x??
A. Reflect it across the x-axis. Stretch it vertically by a factor of 5. Shift it horizontally 10 units to the right. B. Reflect it across the x-axis. Stretch it horizontally by a factor of 10. Shift it horizontally 5 units to the left. C. Reflect it across the y-axis. Shrink it vertically by a factor of 0.5. Shift it vertically 10 units upward. D. Reflect it across the y-axis. Shrink it vertically by a factor of 0.5. Shift it vertically 10 units downward.
Find the vertical asymptote(s) of the graph of the given function. f(x) = 
A. x = 0, x = -9 B. x = 0, x = 9 C. x = -9 D. x = 9
Perform the indicated operation.
A. 3.953 B. 3.847 C. 5.000 D. 4.847