PLSSS HELPPP ME ,Pls

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 the given system of equations. 2y= -x+9 , 3x-6= -15

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish