Madelyn invested $970 in an account paying an interest rate of 8 1/4% compounded monthly. Ashley invested $970 in an account paying an interest rate of 8 3/4%
compounded daily. To the nearest dollar, how much money would Madelyn have in her account when Ashley's money has tripled in value?

Which best explains why this triangle is or is not a right triangle?

Find the area of a parallelogram with the given vertices. p(-2, -5), q(9, -5), r(1, 5), s(12, 5)

1. according to the internal revenue service, the mean tax refund for the year 2007 was $2,708. assume the standard deviation is $650 and that the amounts refunded follow a normal probability distribution. a. what percent of the refunds are more than $3,000? b. what percent of the refunds are more than $3,000 but less than $4,000? c. what percent of the refunds are less than $2,000?