Harriet’s uncle give her $100 to start a savings account. she adds $24 to the account each week.

can you give me more details?

a. she will receive a refund of $278.

step-by-step explanation:

or

step-by-step explanation:

we need to solve for 'x' the following equation:  

we have that:

⇒

⇒ ⇒

factorizing, we get that:

  ⇒

then, the solutions are: or

nothing extraneous has been found!