The table shows the amount of lemon juice needed to make lemonade. (unit 9 lesson 3) lemon juice (cups) 5 10 20 servings 35 70 140 are the two quantities proportional? if so, what is the constant of proportionality?

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