Factor completely. If the polynomial is prime, so state.x2 + x - 20
A. (x - 4)(x + 5)
B. (x + 1)(x - 20)
C. (x - 5)(x + 4)
D. prime
Answer: A
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Solve the problem.Find ? for the minute hand of a clock.
A. 
radians per min
B. 
radians per min
C. 30? radians per min
D. 
radians per min
Solve the problem.Two bacteria are placed in a petri dish. The population will triple every hour. How many bacteria are in the dish eight hours after the two bacteria are placed in the dish?
A. 48 B. 1024 C. 13 D. 13,122
Use the slope-intercept form to write the equation of the line passing through the point P(16, 2) and having the slope 
. Express the answer in general form.
?
A. 
B. ?
C. ?
D. ?
E. ?
Solve.When making a telephone call using a calling card, a call lasting 3 minutes cost $0.80. A call lasting 12 minutes cost $1.70. Let y be the cost of making a call lasting x minutes using a calling card. Write a linear equation that models the cost of a making a call lasting x minutes.
A. y = 0.1x - 10.3
B. y = 10x - 
C. y = -0.1x + 1.1
D. y = 0.1x + 0.5