BIG IDEAS MATH 3: Chapter 3 Review Exercises > Section Exercises 3 > Exercise 4 The function y 10x + 100 represents the amount y (in dollars) of money in your bank account after you babysit for x hours. a. Identify the independent and dependent variables. The dependent variable is the amount of money in the bank account The independent variable is the hours you babysit b. You babysit for 4 hours. Find the domain and range of the function. domain: range: