Answer:
Starting with 2 pennies, Kelly adds 2 more pennies to her penny jar every day. To find out how many pennies she will have on Day 10, we can calculate the total number of pennies accumulated.
On Day 1, she has 2 pennies.
On Day 2, she adds 2 more pennies, bringing the total to 2 + 2 = 4 pennies.
On Day 3, she adds 2 more pennies, bringing the total to 4 + 2 = 6 pennies.
This pattern continues, with 2 additional pennies added each day.
We can summarize the pattern as follows:
Day 1: 2 pennies
Day 2: 4 pennies
Day 3: 6 pennies
Day 4: 8 pennies
Day 5: 10 pennies
Day 6: 12 pennies
Day 7: 14 pennies
Day 8: 16 pennies
Day 9: 18 pennies
Day 10: 20 pennies
Therefore, on Day 10, Kelly will have a total of 20 pennies in her penny jar.