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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 :

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

[tex]y=20x+50[/tex]

After 3 weeks, she will have

[tex]\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}[/tex]

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

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