Literal Equations and Equations in Two Variables Recap

Question 1: Solve the equation for the indicated variable 2(x-3y)=12; y

Question 2: Solve the equation for x: 5/x=10y

Question 3: A plumber charges a $60 consulting fee then $50 per hour for every hour of work. Write an equation that models the plumber’s total income (t) after working x hours.

Question 4: A plumber charges a $60 consulting fee then $50 per hour for every hour of work. The equation t=50x+60 models the total amount of money the plumber makes after x hours of work. Is (4,260) a solution to the equation? If so interpret the solution.

Question 5: Cynthia and Gabby are both saving money. Gabby has $50 saved and saves $10 every week. Cynthia has no money saved but saves $20 per week. Who has more money saved after 4 weeks and how much do they have?