Paul has just enough money to buy either 5 erasers and 30 pencils or 10 erasers and 24 pencils. Each eraser costs $0.30. How muc

s(x)=1.03x−1

so be sure to place parentheses around (x-1)

This indicates that her investment is increasing by 3% each time period as defined by the bank (e.g., monthly, annually...).