F(x)=4x+1/3, solve for f^1(3)

How many kilometers are equal to 5 miles? use 1 mile ≈ 1.61 kilometers. !

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

What is the axis of symmetry of the function f(x)=-(x+ 9)(x-21)