Jill earns $15 per hour babysitting plus a transportation fee of $5 per job. write a formula for e, jill's earnings per babysitting job, in terms of h, the number of hours for a job. then solve your formula for h.

Frank has a devised a formula for his catering business that calculates the number of meatballs he needs to prepare. the formula is m=4a+2c, where c=number of children; m=number of meatballs; a=number of adults. how many meatballs are required for a party of 10 adults and 5 children?