Solve the problem.A rectangular piece of cardboard measuring 19 inches by 28 inches is to be made into a box with an open top by cutting equal size squares from each corner and folding up the sides. Let x represent the length of a side of each such square. For what value of x will the volume be a maximum? If necessary, round to 2 decimal places.
A. 14.66 in.
B. 23.92 in.
C. 11.96 in.
D. 3.71 in.
Answer: D
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Use the slopes of UQ, UR, US, and UT to estimate the rate of change of y at the specified value of x.x = 2.5
A. 7.5 B. 0 C. 1.25 D. 3.75
Add or subtract. Express the answer as a mixed number.19
+ 16
A. 34
B. 36
C. 19
D. 35
Graph the function over a one-period interval.y = 
cos 
+ 3
A. 
B. 
C. 
D. 
Solve.The motion of a projectile that is fired at a 45° angle with the horizontal is given by x = v0
t, 
for t in 
Suppose a projectile is fired with an initial velocity of 100 feet per second at an angle of 45° with the horizontal. Find (a) the time when it strikes the ground and (b) the range (horizontal distance covered).
A. (a) 4.4 seconds (b) 313 feet B. (a) 8.8 seconds (b) 625 feet C. (a) 8.8 seconds (b) 78 feet D. (a) 2.2 seconds (b) 78 feet