Question

Raul opened a savings account with $3,500.Each week,d, Dale pays the dog sitter 25$ from his saving account. Write a function,fd, that is equal to the amount of money in the amount after Raul pays the dog sitter each week.

Answer 1

`f(d)=-25d+3,500`

Explanation:

Raul opened a savings account with $3,500.

Each week, Dale pays the dog sitter $25 from his saving account.

Let d be the number of weeks and f(d) be the function representing the amount of money in the account after Raul pays the dog sitter d weeks.

The amount of money in the Raul's account is decreasing each week by $25, then the slope of the linear function is
`m=-25`

Initially, at week d=0, Raul's account has $3,500, so b=3,500.

Write the function's expression in the form

`f(d)=md+b`

Hence,

`f(d)=-25d+3,500`