The average of an electrician's hourly wage and a plumber's hourly wage is $30. One day a contractor hires an electrician for 9hr of work and the plumber for 7hr of work and pays a total of $508 in wages. Find the hourly wage for the electrician and for the plumber.

Francisco's credit card has an apr of 28.98%, calculated on the previous monthly balance. his credit card record for the last 7 months is shown in the table below francisco is trying to figure out what this all means. answer the following questions: what is the total amount that francisco has paid in interest over the 7 months? what is the total amount that francisco has made in payments over the 7 months? how much of francisco's payments have gone to paying down the principal on his account? what is francisco's new balance at the end of month 8? what will francisco be charged for interest for month 8?