Kathryn invests $7,612 in a retirement account with a fixed annual interest rate of 6% compounded continuously. How long will
It take for the account balance to reach
$17,632.19? Round to the nearest WHOLE NUMBER.

There were 816 people at a concert when a band started to play. after each song, only half the people stayed to hear the next song. how many people were left at the concert after x songs? write a function to represent this scenario.

The first-serve percentage of a tennis player in a match is normally distributed with a standard deviation of 4.3%. if a sample of 15 random matches of the player is taken, the mean first-serve percentage is found to be 26.4%. what is the margin of error of the sample mean? a. 0.086% b. 0.533% c. 1.11% d. 2.22%

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)