Can somebody answer this?

Find an equation for the linear function which has slope -10 and x-intercept -7

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

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