Last year, hans had
$30,000
to invest. he invested some of it in an account that paid
9%
simple interest per year, and he invested the rest in an account that paid
10%
simple interest per year. after one year, he received a total of
$2900
in interest. how much did he invest in each account?

Dr. sperry, a biologist, is using excel to track growth rates of different populations of bacteria. she has a very complex formula in one cell. it begins with “round”. dr. sperry would like to see exactly how excel’s calculation reached the final rounded value that she sees in the cell. what could dr. sperry do to best understand how the calculation was made? try different formulas on her own until she reaches the value shown in excel click on the evaluate formula button in the formulas tab and then click “step in” select the cell and then look at the formula in the formula field of the ribbon remove “round” from the formula in order to see the actual value before rounding