Algebra 1, Chapter
4
Now-next exercise
in
addition/subtraction.
Complete the following now-next
chart, including the formulas. Use the
letter N to represent the number of
increments made. Use the example in
the first row as a model for your own
work.
|
Beginning Amount |
Incre-
ment |
After 1 |
After
2 |
After
3 |
After 4 |
After 5 |
After
6 |
Formula |
|
100 |
25 |
125 |
150 |
175 |
200 |
225 |
250 |
100+25N |
|
200 |
100 |
300 |
400 |
|
|
|
800 |
200+100N |
|
150 |
50 |
|
|
|
|
400 |
|
|
|
|
10 |
|
320 |
330 |
340 |
|
|
|
|
35 |
|
55 |
|
|
|
|
|
35+20N |
|
10 |
|
|
|
|
|
|
|
10+2N |
|
0 |
25 |
|
|
|
100 |
|
|
|
|
75 |
|
|
|
150 |
|
|
|
|
|
|
|
|
|
|
|
|
|
75+20N |
|
|
|
|
|
|
110 |
150 |
|
|
Story Problem Š
JenniferÕs
Granny gave her $100 to start her college fund and afterwards
gave her $20 each
month to add to her college fund. After three months
how much money will her
Granny have given her? How much after exactly
four years? Write a formula
showing the relationship of time to the
amount given.