Solve the problem.A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is given by 
. At what time(s) will the ball be 
from the ground? Round your answer to the nearest tenth of a second.
A. 1.0 sec and 9.9 sec
B. 10.9 sec
C. 169.8 sec and 180.2 sec
D. 5.5 sec
Answer: A
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Solve the problem. Round your answer, if appropriate.The volume of a rectangular box with a square base remains constant at 1,100 cm3 as the area of the base increases at a rate of 2 
2/sec. Find the rate at which the height of the box is decreasing when each side of the base is 12 cm long. (Do not round your answer.)
A. 
cm/sec
B. 
cm/sec
C. 
cm/sec
D. 
cm/sec
Provide an appropriate response.Illustrate with an example that (a + b) - c = a + (b - c) in the set of whole numbers.
What will be an ideal response?
An objective function and a system of linear inequalities representing constraints are given. Graph the system of inequalities representing the constraints. Find the value of the objective function at each corner of the graphed region. Use these values to determine the maximum value of the objective function and the values of x and y for which the maximum occurs.Objective Function z = 7x + 6yConstraints x ? 0 y ? 0 3x + y ? 21 x + y ? 10 x + 2y ? 12
A. Maximum 60; at (6, 3) B. Maximum 65.5; at (5.5, 4.5) C. Maximum 66; at (6, 4) D. Maximum 68; at (8, 2)
Find the slope of the line. 
A. - 2
B. 
C. 2
D. - 