4) ASAP P-LZ ANSWER THIS QUESTION AND IT MUST SHOW WORK AND IT MUST BE RIGHT PLZPLZ

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39