Solve the inequality. Write the solution set in interval notation and graph it.f + 1 < 9
A. (-?, 8)
B. [8, ?)
C. (8, ?)
D. (-?, 8]
Answer: A
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Solve the problem.A swimming pool has a rectangular base 12 ft long and 24 ft wide. The sides are 6 ft high, and the pool is half full of water. How much work will it take to empty the pool by pumping the water out over the top of the pool? Assume that the water weighs 62.4 lb/ft3. Give your answer to the nearest ft ? lb.
A. 161,741 ft ? lb B. 121,306 ft ? lb C. 242,611 ft ? lb D. 323,482 ft ? lb
Perform the operation and write the result in the standard form.(8 + 
)(2 + 
)
A. 4 + 52i B. 80 i C. 160 + 296i D. 80
Find an equation for the graph.
A. y = 2 sin 
x
B. y = 3 sin 
x
C. y = 3 sin 2x
D. y = 2 sin 3x
Find the area of the triangle. If necessary, round the answer to two decimal places.a = 12, b = 15, C = 52°
A. 70.92 B. 141.84 C. 88.80 D. 35.46