Solve. Round to the nearest percent if necessary.Enrollment in a class at a local college increased from 90 to 135. What was the percent of increase?
A. 45%
B. 150%
C. 33%
D. 50%
Answer: D
Mathematics
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Use Cramer's rule to solve the system. x + 2y - 3z + w = 7 3x + 4y - z + 2w = 4-2x + y + z - w = -3 x - y + 2z - 2w = 1
A. 
B. 
C. 
D. 
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Solve area problem.A rectangular piece of fabric is 
by 
A triangular area with a height of 
and a base of 
is cut from the fabric. How much area is left over?
A. 267.15 ft2 B. 287.575 ft2 C. 374.5 ft2 D. 534.3 ft2
Mathematics
Solve the problem.A rug is to fit in a room so that a border of even width is left on all four sides. If the room is 17 feet by 22 feet and the area of the rug is 204 square feet, how wide will the border be?
A. 5 ft B. 4.5 ft C. 2.5 ft D. 3.5 ft
Mathematics
Graph the sinusoidal function using key points.y = 3 sin(2x)
A. 
B. 
C. 
D. 
Mathematics