Question

You saved $3 during Week 1, $6 during Week 2, $12 during Week 3, and $21 during Week 4. If the pattern continues, how much money will you save during Weeks 8 and 9 combined?

Answer 1

It looks like the amount of money saved is increasing by a multiple of 2 each week. So, you would save $42 during week 5, $84 during week 6, $168 during week 7, $336 during week 8, and $672 during week 9. Therefore, you would save a total of $1,008 during weeks 8 and 9 combined.