The amount of money in a bank account increased by 21.5% over the last year. If the amount of money at the beginning of the year is represented by n, which
expression represents the amount of money in the bank account after the
increase?step by step

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?

Find the arc length of the semicircle. 7the grade

Gables properties corp. is leasing office building with an area of 49b^2+70b+25. what is the shape of the building? a) rectangle b) square