Samantha works at a bakery. The function f(x) = 3x2 − 5 represents the amount of money Samantha earns per cookie, where x is the number of cookies she makes. The function g of x equals square root of quantity 5 times x cubed end quantity represents the number of cookies Samantha bakes per hour, where x is the number of hours she works. Find f(g(x)), and explain what it represents.