G=f(m)=15-\frac{m}{20}-\frac{m^{2}}{6000}, 0 \leq m \leq 180 expresses the number of gallons of gas remaining in the tank of your old truck in terms of your distance (in miles, measured along

your route) from homeоп a 180-тile trip. (a) Draw an accurate graph of the function G = f(m). (b) How far are you from home when your truck is getting 12 miles/gallon?Start by defining an unknown. Do not use m, it is already taken. Follow the usual directions. Also, relate part of your explanation to the graph from part (a).