The tables show some input and output values: which tables represent functions? only a only b both a and b neither a nor b

What is the inverse of the function f(x)=4x+8

Liz is shipping a package to her friend.the maximum weight of a medium flat-rate box is 20 pounds,including the box which weighs 6 ounces.write and solve an inequality to describe the possible weight ,w, of the contents that liz will ship to her friend if she must use a medium flat-rate box.

Which is the graph of this function 3 square root of x plus one if