For his long distance phone service Hong pays $5 monthly fee plus 9 cents per minute. Last month hongs long distance bill was $13.46. For how many minutes was Hong Billed

You will need to make an equation for this. First, you know that he always pays $5 monthly, keep this in mind. Then it is given that his bill last month was 13.46 and that we need to know the minutes spent. for every minute, 9 cents or $0.09 is charged. In order to find out the time he spent, write the equation as such:

$5+$0.09 (minutes) = $13.46 and solve from there