The situation can be modeled as a linear equation: y = 12x Where y: amount of dollars. x: hours worked. Independent variable: x (hours worked). Dependent variable: y (amount of dollars). he works at most 40 hours per week Domain: x belongs [0, 40] To determine the range, we must calculate how much Bill earns per week y = 12 * (40) = 480. Range: y belongs [0, 480] answer Independent variable: x (hours worked). Dependent variable: y (amount of dollars. Domain: x belongs [0, 40] Range: y belongs [0, 480]