Answer:
$40
Explanation:
1. Miguel received $20 to start and $4 per week for allowance. The $20 is not a repeated thing, unlike the allowance. So, multiply the dollars per week by the number of weeks that he is saving for.
$4 per week x 5 weeks = $20.
2. Add in the $20 that he was initially given to start with.
$20+$20 = $40