Let's break down the information given:
- Rita had x packages of saplings.
- Each package had 5 saplings.
- She planted 15 saplings.
- She has at most 20 saplings left.
First, let's determine how many saplings Rita had initially:
Rita initially had x packages of saplings, with each package containing 5 saplings. So, the total number of saplings she had initially is 5x.
She planted 15 saplings, which means the number of saplings remaining is 5x - 15.
According to the information, she has at most 20 saplings left. This means:
5x - 15 ≤ 20
Now, we can solve this inequality for x:
5x - 15 + 15 ≤ 20 + 15
5x ≤ 35
Now, divide both sides by 5 to isolate x:
5x/5 ≤ 35/5
x ≤ 7
So, Rita initially had at most 7 packages of saplings.
Now, let's represent this solution on a number line graph:
0 7 20
|----------|---------------------|--->
| | |
Initial Rita's Planting At most
Packages 15 Saplings 20 Saplings
On the number line, we have a range from 0 to 7 for the initial number of packages of saplings Rita had. The arrow points to the right, indicating that the value of x (the initial number of packages) is less than or equal to 7.