Does anyone know how to work with scaled factors then help

the question is in the photo

What is the area of triangle abc if a = 8, b = 11, and c = 15?

When only separate discreet points are graphed it is called?

The frequency table shows a set of data collected by a doctor for adult patients who were diagnosed with a strain of influenza. patients with influenza age range number of sick patients 25 to 29 30 to 34 35 to 39 40 to 45 which dot plot could represent the same data as the frequency table? patients with flu