Unit rate for $56/25 gal

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?

How many solutions does the nonlinear system of equations graphed below have?

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.