Part 2 math please need it done

Find the required measurements of the following trapezoids. a = 8 cm b = 16 cm h = 10 cm

Your food costs are $5,500. your total food sales are $11,000. what percent of your food sales do the food costs represent?

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212