# Posts by Laurin

Total # Posts: 14

Math
Why does a sheep scratch himself

Math
The purchases made by customers at a convenience store are normally distributed, with a mean of \$5.50 and a standard deviation of \$3.50. What is the probability that a randomly chosen customer makes a purchase between \$2.00 and \$9.00?

Math
The purchases made by customers at a convenience store are normally distributed, with a mean of \$5.50 and a standard deviation of \$3.50. What is the probability that a randomly chosen customer makes a purchase between \$2.00 and \$9.00?

math
If you deposit money in a savings account with an interest rate (APR) of 5% and the account compounds quarterly, which is your annual percentage yield (APY)? Convert your answer to a percent and round it to two decimal places.

math
How long (in years) will it take your money to triple at an annual percentage rate of 5% compounded annually? Use logarithms to solve. Round and show 2 decimal places.

Calculus
On what intervals is the function f(x)=x7−7x6 both decreasing and concave up?

calculus
Consider a car whose position, s, is given by the table t(s) s(ft) 0 0 .2 0.35 .4 1.8 .6 3.8 .8 6.5 1 9.6 Estimate the velocity at t=0.2

when i am rounded to the nearest hundred, i am 3,300. the difference between my ones and thousands digits is 1. my tens digit is the same number as my ones digit. I can be two different numbers. who am i?