Which of the following is equivalent to (2a^2-6ab+4b^2)-(-a^2+2ab-2b^2)

Which one ? is the answer and how to find this answer

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.

If f(x) = -5x + 1 and g(x) = x3, what is (gºf)(0)? enter the correct answer