Quadratic Equations - Solve by Eliminating Questions #7,8,13,14

The complement of an angle is one-sixth the measure of the supplement of the angle. what is the measure of the complement angle?

Afamily has two cars. the first car has a fuel efficiency of 25 miles per gallon of gas and the second has a fuel efficiency of 15 miles per gallon of gas. during one particular week, the two cars went a combined total of 1025 miles, for a total gas consumption of 55 gallons. how many gallons were consumed by each of the two cars that week?

Which net represents the pyramid below? meh