Evaluate , where  and S is given by ,

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?



A. ?
B.
C. ?
D. ?
E. ?

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Answer: C

Mathematics

Find dy/dt.y = cos()

A. -sin
B.  sin()
C. -sin()
D. -  sin()

Solve the problem.A cross-section of an irrigation canal is a parabola. If the surface of the water is 48 ft wide and the canal is  deep at the center, how deep is it 24 ft from the edge?

A. 7 ft B. 1.8 ft C. 5.2 ft D. 0 ft

The fire department wants to send booklets on fire hazards to all teachers and homeowners in town. How many booklets does it need, using these statistics?  35,000 homeowners6,000 teachers3,000 teachers who own their own homes?

A. 9,000 B. 32,000 C. 38,000 D. 26,000 E. 44,000

Find the exact solutions to the quadratic equation in the complex numbers.x2 + 225 = 0

A. 15i B. ±15 C. -112.5i D. ±15i