Solve the problem.A glass has circular cross sections that taper (linearly) from a radius of 5 cm at the top of the glass to a radius of 4 cm at the bottom. The glass is 13 cm high and full of lemonade. How much work is required to drink all the lemonade through a straw if your mouth is 4 cm above the top of the glass? Assume the density of lemonade equals the density of water. Round to two decimal places when appropriate.
A. 0.26 J
B. 1.68 J
C. 30.22 J
D. 0.82 J
Answer: D
Mathematics
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A. 9x + 7 B. 9(x + 7) C. 9 D. x + 7
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+ 
= 1 if a = b.
What will be an ideal response?
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Find the end behavior of the polynomial function. f(x) = -x3 + 2x2 + 7x - 8
A. f(x) ? ? as x ? -?; f(x) ? ? as x ? ? B. f(x) ? -? as x ? -?; f(x) ? -? as x ? ? C. f(x) ? -? as x ? -?; f(x) ? ? as x ? ? D. f(x) ? ? as x ? -?; f(x) ? -? as x ? ?
Mathematics