How do you explain what y=3^x is?

What is the point-slope form of the equation for the line with a slope of -2 that passes through (1,4)?

Which is the completely factored from of xy^3-x^3y

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.