Determine the present value P that must be invested to have the future value A at simple interest rate r after time t. A = $2500, r = 22%, t = 2 years

The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a mean of $235 and a standard deviation of $20. according to the standard deviation rule, how much did almost all (99.7%) of the students spend on textbooks in a semester?

15 and 14.7 are 1 apart, so 15 – 14.7 must be 1.

The candy store is having a 30% off sale. emma is going to buy $7.50 worth of candy.how much will she pay after the discount