Evaluate the expression for the given value.7x2 when x = 5
A. 245
B. 175
C. 70
D. 1225
Answer: B
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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 problem.Solve for m in terms of the other variables.
A. m = 
B. m = 
C. m = n2 - p2
D. m = 
Determine the five-number summary of the given data.10, 12, 15, 17, 20, 30, 15, 31, 12, 17, 20, 20, 12
A. 12, 13.5, 17, 20, 31 B. 10, 12, 16, 20, 30 C. 10, 12, 17, 20, 31 D. 10, 17, 15, 17, 12
Solve.Suppose that the sales of a particular brand of appliance satisfy the relationship 
where S(x) represents the number of sales in year x, with x = 0 corresponding to 1990. For what years will sales be between 1580 and 2720?
A. Between 1991 and 1997 B. Between 1992 and 1997 C. Between 1992 and 1998 D. Between 3 and 9