you are saving for a skateboard. your aunt gives you $45 to start, and you save $3 every week. how much will you have after six weeks?

After 6 weeks, you will have saved $3 every week for a total of 6 * $3 = $<<6*3=18>>18.

In addition to the $45 your aunt gave you, you will have $45 + $18 = $<<45+18=63>>63. Answer: \boxed{63}.

To calculate how much you will have after six weeks, you can add up the initial amount your aunt gave you and the total amount you saved each week.

Initial amount from your aunt: $45
Amount saved per week: $3

After 6 weeks:
Total amount from your aunt: $45

Amount saved per week for 6 weeks: $3/week x 6 weeks = $18

Total amount saved after 6 weeks:
$45 + $18 = $63

Therefore, you will have $63 after six weeks.

To calculate how much money you will have after six weeks, we need to add the initial amount given by your aunt and the amount saved every week over the course of six weeks.

- Initial amount given by your aunt: $45
- Amount saved every week: $3

To find the total amount saved after six weeks:
1. Multiply the amount saved per week ($3) by the number of weeks (6): $3 × 6 = $18
2. Add the initial amount given by your aunt ($45) to the amount saved over six weeks ($18): $45 + $18 = $63

Therefore, you will have a total of $63 after six weeks of saving.