19 12 A company makes 12 different types of television. The cost (in dollars) and screen size (in centimetres) of each type of television are shown in the scatter diagram. 900 800 700 600 500 Cost ($) 400 300 200 100 0 40 50 60 70 80 90 100 110 120 Screen size (cm) (a) Write down the cost of the television that has a screen size of 65 cm. $ [1] (b) The company is introducing a new television with a screen size of 85 cm. Put a ring around the cost that you think would be most appropriate for the new television. $320 $530 $690 $800 Explain your answer.