Question

Priya starts

with $50 in her bank account. She then
deposits $20 each week for 12 weeks.
Write an equation that represents the relationship
between the dollar amount (y) in her bank account
and the number of weeks (x) of saving.

Answer 1

• y = 20x + 50

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Given

• Initial deposit = $50,
• Weekly deposit = $20,
• Number of weeks = 12.

Solution

The total deposit over 12 weeks:

• y = 12*20 + 50 = 240 + 50 = 290

Equation in general form:

• y = 20x + 50, where x- number of weeks, y- amount of savings