The percentage, P, of students who recall the important features of a lecture after x days is given by the formula 
. Use this formula and the change-of-base formula to find the percentage, P, of a lecture retained after the given number of days. Round your answer to the nearest whole percent.6 days
A. 27%
B. 41%
C. 17%
D. 21%
Answer: C
Mathematics
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Solve the problem.Find the mass of a sphere of radius 7 if 
k a constant.
A. 343k? B. 2,401k? C. 4,802k? D. 49k?
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Provide an appropriate response.Determine if 
converges or diverges. If it converges, to what number does it converge?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Translate the sentence to an algebraic inequality.The cost is no more than $336.95.
A. x ? 336.95 B. x > 336.95 C. x < 336.95 D. x ? 336.95
Mathematics
If the diagonals of a quadrilateral are perpendicular, the quadrilateral must be a square.
Answer the following statement true (T) or false (F)
Mathematics