Factor completely, or state that the polynomial is prime.x4 + 16x2 - 225
A. (x + 3)(x - 3)(x2 + 25)
B. (x2 - 9)(x2 + 25)
C. (x + 3)(x - 3)(x + 5)(x - 5)
D. (x - 3)2(x2 + 25)
Answer: A
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Complete the blank with either ? or ? to make the statement true.11 {9, 10, 11, 12}
A. ? B. ?
Interpret the linear equation.The monthly cost of a certain long distance service is given by the linear function 
where y is in dollars and x is the amount of time in minutes called in a month. Find and interpret the slope and y-intercept of the linear equation.
A. m = 0.08; The number of minutes called in a month increases 0.08 for every dollar spent. b = 7.95; The number of minutes that can be called when x = 0 is 7.95. B. m = 7.95; The number of minutes called in a month increases 7.95 for every dollar spent. b = 0.08; The number of minutes that can be called when x = 0 is 0.08. C. m = 7.95; The cost of the long distance service increases $7.95 for every 1 minute called. b = 0.08; The cost of the long distance service is $0.08 if no calls are made for the month. D. m = 0.08; The cost of the long distance service increases $0.08 for every 1 minute called. b = 7.95; The cost of the long distance service is $7.95 if no calls are made for the month.
Find the value of x that corresponds to y = 7 in the graph of the equation 4x - 3y = -37. ?
A. 4 B. -16 C. -3 D. 3 E. -4
Solve.If a person puts 1 cent in a piggy bank on the first day, 2 cents on the second day, 3 cents on the third day, and so forth, how much money will be in the bank after 30 days?
A. $2.33 B. $0.30 C. $4.65 D. $9.30