Whlch statement best describes how to determine when a graph is a function?

Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?

Find the degree 3 taylor polynomial p3(x) of function f(x)=(-3x+15)^(3/2) at a=2

Benefit(s) from large economies of scale, in which the costs of goods decrease as output increases. natural monopolles perfect competition