Examine the worked examples. Then, answer the questions.
 Alessa's car uses 2 gallons of gas to drive 45 miles. How many miles can
 Alessa's car drive using 15 gallons of gas?
 Let m represent the number of miles and g represent the gallons of gas.
 m=
 11 L
 m=
 m=
 Write an equation in the form y = kx for the number of
 miles in terms of the gallons of gas.
 (15) Substitute the value for the given quantity.
 Evaluate the right hand side of the equation.
 Alessa's car can drive
 miles using 15 gallons of gas.