What allows a function to maintain similarity?

If private savings 'v' = 0.75s and total savings 's' equals $4.20 billion, solve for public and private savings.

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.

Which expression is equal to (f+g)(x)?