5) The population of a large city increases by a rate of 3% a year. When the 2000 census was taken, the population was 1.2 million.
a) Write a model for this population growth.
b) What should the population be now?
c) What is the projected population for the year 2020?
Pls help show work

rick has $1400 and sally has $1500

step-by-step explanation:

to find amount of money rick has after 10 years :

principal = $1000 , time = 10 years , rate = 4% annually

to find amount of money sally has after 10 years :

her friend gives to pay her $50 per year, therefore money she has after 10 years = 50 × 10 = $500

also, sally gets $1000 after 10 years,

therefore, total amount of money sally has after 10 years = 500 + 1000 = $1500

so, after 10 years : rick has $1400 and sally has $1500