Hey can someone help me out with this!

Consider the functions below. function 1 function 2 function 3 select the statement which is true about the functions over the interval [1, 2] a b function 3 has the highest average rate of change function 2 and function 3 have the same average rate of change. function and function 3 have the same average rate of change function 2 has the lowest average rate of change d.

Solve: 3x+y=6 4x-2y=18 show all work !

If f(x)= sqrt4x+9+2, which inequality can be used to find the domain of f(x)?