Factor completely 81x^4-16

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

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.

What is the solution to the equation e3x=12? round your answer to the nearest hundredth