TI-83 Plus CellSheet™ Application
Page 24
Your spreadsheet should look like this:
Using the following formulas, calculate how much interest and
principal Margaret will have paid after six months.
The total principal paid is 1500 – P
7
.
The total interest paid is the sum of I
1
through I
6
.
The total of the payments made is the sum of PMT
1
through
PMT
6
.
1. Move the cursor to cell A9, and then enter the formula
=1500 – A8
(
¡
1500
e
A8
¯
).
2. Move the cursor to cell B9, and then press
¡
.
3. Press
V
to display a list of functions, and then select
sum(
.
4. Press
n
, and then move the cursor to cell B2.
5. Press
R
to begin range selection.