Can someone help me ?????

Frankly, you're supposed to know by now that
1 liter is the same as  1,000 milliliters.

2 liters = 2,000 milliliters
3 liters = 3,000 milliliters
4 liters = 4,000 milliliters
5 liters = 5,000 milliliters
6 liters = 6,000 milliliters
7 liters = 7,000 milliliters
70 liters = 70,000 milliliters
700 liters = 700,000 milliliters

A = 3 and B = 2

Step-by-step explanation:

Here, we are interested in giving the values for A and B

We are told that there are three cartons, with 100 gun balls in each.

The total number of gum balls Jackson have will be 100 + 100 + 100= 300

Now, we want to express 300 in the form a•10^b

Thus;

300 = 3 * 100

3 * 100 = 3 * 10^2

where A = 3 and B = 2