Incorrect. Try constructing a table like this in order to help you setup a system of equations:

	Earnings	=	Rate	*	Time
Washing cars		=	9	*
Babysitting		=	16	*

How can you represent the different number of hours that the team spent doing the two chores? How can you represent the different amount of money the team earned by doing the different chores? (Hint: think of the total amount of time spent and the total amount of money earned.)