Analyze Dependent and Independent Variables Practice Test

A car rental company charges $30 per day plus $0.25 per mile driven. Two students write different equations: Student A writes $$C = 30d + 0.25m$$ and Student B writes $$C = 30 + 0.25m$$ (for one day). In terms of independent and dependent variables, which analysis is most accurate?

A science experiment measures how temperature affects the volume of a gas. Students record that when temperature increases by 10°C, volume increases by 15 mL. If $$T$$ represents temperature and $$V$$ represents volume, and the initial volume is 200 mL at 20°C, which analysis correctly identifies the relationship?