2x + 4 = 2x + 6
2x - 2x = 6 - 4
0 = 2this is incorrect...therefore, there is no solution
rick has $1400 and sally has $1500
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
we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.
as we can see m is taken for the number of months for years 1900-2009.
we know that number of months can't be a negative number or decimal number or a fraction.
so, the number of months could be only positive whole numbers.
therefore, whole numbers is more appropriate for the domain of r.