What does this symbol mean?

—the graph shows how fast a strand of human hair grows. how many inches would the hair have grown in 5 months

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

The graph shows the charges for a health club in a month. make a function table for the input-output values. writes an equation that can be used to find the total charge y for the number of x classes