For a certain epidemic the number N of new cases expected in a day depends on the number t of days since the outbreak began. The relationship is
.
?
What is the greatest number of new cases that occur on a day, and on what day does that happen? Round both answers to the nearest whole number.
A. A maximum of 41 new cases occurs on day 24.
B. A maximum of 21 new cases occurs on day 38.
C. A maximum of 24 new cases occurs on day 41.
D. A maximum of 38 new cases occurs on day 21.
Answer: D
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Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the parabola y = 4 - x2 and the x-axis, with density ?(x) = 2x2
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 
, 
= 0
D. 
= 0, 
= 
Solve the equation by using the quadratic formula.
?
What will be an ideal response?
Find the indicated term of the binomial expansion.(4x - 2y)9; 4th term
A. -2,752,512x6y3 B. -688,128x3y6 C. 1,376,256x6y4 D. 1,376,256x3y6
Factor.42m9 + 60m6 + 36m3
A. No common factor B. 6(7m9 + 10m6 + 6m3) C. m3(42m6 + 60m3 + 36) D. 6m3(7m6 + 10m3 + 6)