Answer:
9
Explanation:
First, you write out the equation. We don't know how many tickets Eva bought, so it can be represented by x. Each ticket costs 45 dollars. The amount of tickets times 45 plus the fee will equal 422.99, so the equation will look like this:
45x + 17.99 = 422.99
Subtract 17.99 from both sides:
45x = 405
Divide 45 on both sides:
x = 9
Eva bought 9 tickets
hope this helps :)