Answer:they must collect $127.75 each week
Explanation:
The total amount of money that the sixth grader has collected so far for a local animal shelter is $116.75.
Their goal is to collect $500.
Let x represent the minimum amount of money that they must collect each week. They have 3 weeks left. This means that the total amount of money that they can collect in 3 weeks would be
3 × x = $3x
Therefore,
3x + 116.75 = 500
3x = 500 - 116.75
3x = 383.25
x = 383.25/3
x = $127.75