Question

4. Priya starts with $50 in her bank account. She then deposits $20 each weekfor 12 weeks.4a. What are the coordinates of the point on the line that represents theamount in savings after 3 weeks?O (3,170)O (170,3)(3,110)(110,3)

Answer 1

At week 0, she starts at $50, and deposits $20 in succedding weeks. Let x be the number of weeks, the equation is therefore

`y=20x+50`

After 3 weeks, she will have

`\begin{gathered} x=3 \\ \text{substitute it to the equation and we have:} \\ y=20x+50 \\ y=20(3)+50 \\ y=60+50 \\ y=110 \end{gathered}`

Therefore, the point in the line would be (3,110).