Please help. I don’t understand and this is due tomorrow.

Can (2,3 and square root 10) be sides ona right triangle?

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Someone answer asap for ! 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