Factor completely. If a polynomial cannot be factored, say it is prime.x2 - 9x + 81
A. prime
B. (x - 9)2
C. (x + 9)(x - 9)
D. (x + 9)2
Answer: A
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Solve the problem.A heat engine is a device that converts thermal energy into other forms. The thermal efficiency, e, of a heat engine is defined by 
where Qh is the heat absorbed in one cycle and Qc, the heat released into a reservoir in one cycle, is a constant. Find 
.
A. 
= 
B. 
= 
C. 
= 
D. 
= 
Use the at least once rule to find the indicated probability.Find the probability of at least one club when you draw cards from a standard deck 11 times; assume that you replace the card each time you draw , so there are always 52 cards to draw from.
A. 0.042 B. 0.585 C. 0.958 D. 0.014
Divide numerator and denominator by the highest power of x in the denominator to find the limit.
A. 
B. ?
C. 0
D. 
Solve the problem.Find the image of the figure for the dilation with center P and scale factor 3/5.
A. 
B. 
C. 
D. 