that was a hard test, I only got a 247 and missed 5punchins...
anyway,
18-The Toyota Prius hybrid automobile costs $23070 and gets 50 mi/gal. It uses both gasoline and a battery that is charged when braking. What is the break-even dricing distance for a Prius compared to a $18000 car that gets 30 min/gal if gasoline costs $3.03 gal? ANS:125000 mi
28-A line 150 units long spans from the origin to a point (a,b) on the parabola y=4x^2. What is (pos) a? ANS: 6.12
37-5 oz of dye is needed to make 1 gallon of dye stock. How much dye is needed to convert 15 gallons of water to dye stock? ANS:9.76 cups
and 70: ANS:466