Factor completely. State that the polynomial is prime if it cannot be factored.x2 - 15x + 225
A. prime
B. (x + 15)2
C. (x + 15)(x - 15)
D. (x - 15)2
Answer: A
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Graph the linear inequality.-3x - 5y ? 15
A. 
B. 
C. 
D. 
Solve the problem using your calculator.A study was conducted to compare the average time spent in the lab each week versus course grade for computer students. The results are recorded in the table below. Use a graphing calculator to model the data with a linear function that predicts a student's course grade as a function of the number of hours spent in lab. Number of hours spent in lab Grade (percent) 10 96 11 51 16 62 9 58 7 89 15 81 16 46 10 51
A. y = 44.3 + 0.930x B. y = 0.930 + 44.3x C. y = 88.6 - 1.86x D. y = 1.86 + 88.6x
Some comets, such as Hailey's Comet, are a permanent part of the solar system, traveling in elliptical orbits around the sun. Others pass through the solar system only once, following a hyperbolic path with the sun at a focus. The figure shows the path of such a comet. Find an equation for the path, assuming that the closest the comet comes to the sun is 
mi, and that the path the comet was taking before it neared the solar system is at a right angle to the path it continues on after leaving the solar
system.
?
What will be an ideal response?
Use the quadratic formula to solve the quadratic equation.9k2 - 26k - 3 = 0
A. - 
, 9
B. -9, 3
C. 
, - 
D. - 
, 3