Greta starts with $100 in her savings account
She adds $50 each week
Balance after week 1 = 100 + 50 = 150
Part A
Unit rate of change here is = [tex]\frac{\text{Balance after week 1 - Initial balance}}{\text{Initial balance}} * 100[/tex]
⇒ Unit rate of change here is = [tex]\frac{\text{150 - 100}}{\text{100}} * 100[/tex]
⇒ Unit rate of change here is = 50%
Part B
Equation to calculate the amount of money Greta will have after any number of weeks = ?
Money after 'x' number of weeks = [tex]\text{Initial Deposit + x * Weekly Deposit}[/tex]
⇒ Money after 'x' number of weeks = [tex]\text{100 + x * 50}[/tex]
Part C
Money Greta will have after 1 year= ?
In a year there are 52 weeks
So, putting x = 52 in the solution of Part B
⇒ Money after 52 weeks = [tex]\text{100 + 52 * 50}[/tex]
⇒ Money after 52 weeks = [tex]\text{100 + 2,600}[/tex]
⇒ Money after 52 weeks = 2,700
