If she got 9 messages last week and 3rimes as much this week then she got 27 messages because 9x3=27
Return rate, r = 3% = 0.03
x = initial investment
b = final balance
After 1 year, the balance i
b = initial investment + interest
b = x + r*x = (1 + r)*x
Because r = 0.03,
b = 1.03x (after 1 year)
This answer is a equation, my teacher told me this
