Factor completely.18x2 - 78x - 60
A. (18x + 12)(x - 5)
B. 6(3x - 2)(x + 5)
C. (3x + 2)(6x - 30)
D. 6(3x + 2)(x - 5)
Answer: D
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Solve the problem.A baseball pitcher throws a baseball with an initial speed of 138 feet per second at an angle of 20° to the horizontal. The ball leaves the pitcher's hand at a height of 4 feet. Find parametric equations that describe the motion of the ball as a function of time. How long is the ball in the air? When is the ball at its maximum height? What is the maximum height of the ball?
A. x = 129.68t, y = -16t2 + 47.2t + 4 5.725 sec, 1.475 sec, 282.48 feet B. x = 129.68t, y = -16t2 + 47.2t + 4 2.863 sec, 1.475 sec, 3.985 feet C. x = 129.68t, y = -16t2 + 47.2t + 4 6.065 sec, 1.475 sec, 34.81 feet D. x = 129.68t, y = -16t2 + 47.2t + 4 3.032 sec, 1.475 sec, 38.81 feet
Solve the equation symbolically.log2 x = 5.2
A. x = 5.22
B. x = 
C. x = 
D. x = 25.2
The Leslie matrix for a population of birds is 
The population vector for year 1 is 
(a) Estimate the population vector for year 2. (b) Estimate the population vector for year 3.
Solve the equation.-x = 
A. 
B. {1}
C. 
D. {14}