find a linear equation that gives the amount of water in the tank

After 3 minutes, the tank contains 1557 gallons.
After 10 minutes, the tank contains 1494 gallons.
(a) Find a linear equation that gives the amount of water in the tank, G(x), after x minutes have
elapsed. Write the equation in slope-intercept form. Remember to explain what you are doing
at each step and why you are doing it.
(b) Based on your work in part (a), what is the slope of the linear model? Interpret what it means
in the context of the situation.
(c) Use the linear model you created in part (a) to predict the amount of water in the tank after
half an hour. Remember to explain what you are doing and why.
(d) Find the x-intercept of the linear model and interpret what it means in the context of the
situation. Remember to explain what you are doing and why.
(e) Find the y-intercept of the linear model and interpret what it means in the context of the
situation. Remember to explain what you are doing and why