What is the exact area of a circle with a diameter of 18 feet

For f(x)=2x+1 and g(x)= x^2 -7, find (f•g)(x)

What is the value of x in the following equation. -x ^3/2 = -27

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.