To calculate the toll for an 8-mile drive on both roads, we break down the costs as follows. For road A, the cost for the first mile is $1.20 and 35 cents for each additional mile. The additional miles are 7, so the total cost is $1.20 + (7 * $0.35) = $1.20 + $2.45 = $3.65. For road B, the cost for the first mile is $2.25 and 20 cents for each additional mile. Again, the additional miles are 7, so the total cost is $2.25 + (7 * $0.20) = $2.25 + $1.40 = $3.65. Both tolls are equal.