Solve the problem. Round to the nearest tenth if necessary.All 40 of the students in a mathematics class attended class on Monday. On Tuesday only 33 students attended. What was the percent of decrease?
A. 21.2%
B. 17.5%
C. 78.8%
D. 82.5%
Answer: B
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Add or subtract as indicated. Express your answer in standard form.(-6 - 4i) + (2 - 5i)
A. 4 + 9i B. -4 + 9i C. -4 - 9i D. 4 - 9i
Solve the problem.A ball is dropped from 346 feet. If it rebounds 1/3 of the height from which it falls every time it hits the ground, how far will it have traveled in a downward direction when it hits the ground for the fifth time? Round your answer to the nearest tenth of a foot.
A. 522.0 feet B. 527.0 feet C. 510.5 feet D. 516.9 feet
Solve the problem.The amount of paint needed to cover the walls of a room varies jointly as the perimeter of the room and the height of the wall. If a room with a perimeter of 55 feet and 
walls requires 
of paint, find the amount of paint needed to cover the walls of a room with a perimeter of 70 feet and 8-foot walls.
A. 5.6 qt B. 11.2 qt C. 56 qt D. 560 qt
Establish the identity.
= cos x + cot x
What will be an ideal response?