Step 1 :Rearrange the equation to solve for \(V\), which gives \(V = 300 - 25t\).
Step 2 :Substitute \(t = 3\) into the equation to find the current value of the car. This gives \(V = 300 - 25*3 = 225\). So, the current value of the car is \$22500.
Step 3 :Substitute \(t = 7\) into the equation to find the estimated value of the car four years from now. This gives \(V = 300 - 25*7 = 125\). So, the estimated value of the car four years from now is \$12500.
Step 4 :Plot the equation \(V = 300 - 25t\) to visualize the depreciation of the car's value over time. The x-axis represents the age of the car in years, and the y-axis represents the value of the car in hundreds of dollars. The graph shows a linear depreciation of the car's value over time.
Step 5 :\(\boxed{\text{The current value of the car is \$22500 and the estimated value of the car four years from now is \$12500.}}\)