Jennifer started out with 8 dollars. Then she got some more money for her birthday she ended up with 15 dollars. How much did she get for her birthday

15-8 = 7. so she got $7 for her birthday.

Answer: $7

Step by step explanation: so first, we have to form any equation to show that some amount of money was added to eight dollars to get a total of fifteen dollars. Our equation becomes 8+x=15

Where eight is the origins amount, x is the amount that's added to the original amount and fifteen is the final amount.

We then move eight to the other side as a negative number

x=15-8

Therefore, x is equal to seven dollars.