Which shows the series in summation notation?

What is this inequality notation? t is less then or equal to 2

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2

Whit h equation best represents this situation the number 98 increased by an unknown number equal to 120