Multiply.9x3y(xy2 + 5)
A. x4y3 + 45x3y
B. 9x4y3 + 45x3y
C. 9x + 5x3y
D. 45x3y
Answer: B
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Perform the matrix multiplication.Find AB for A = 
and B = 
.
A. 
B. 
C. 
D. 
Solve the problem.A projectile is fired with an initial velocity of 500 feet per second at an angle of 45° with the horizontal. To the nearest foot, find the maximum altitude of the projectile.
A. 1936 feet B. 1953 feet C. 1945 feet D. 1969 feet
Select the region determined by the constraints. Then find the maximum value of the objective function (if possible) and where it occurs, subject to the indicated constraints. ? Objective function: ? z = 8x + 7y ? Constraints: ? x ? 0 y ? 0 2x + 2y ? 10 x + 2y ? 6 ?
A. ?
Maximum at (0, 5): 35
B. ?
Maximum at (5, 0): 36
C. ?
Maximum at (6, 0): 48
D. ?
Maximum at (4, 1): 39
E. ?
No maximum
If possible, find the slope of the line passing through the two points.
, 
A. 
B. 
C. 
D. 