What is the area of the composite figure?

70 cm2
100 cm2
105 cm2
130 cm2

Can you simplify 4/7? 24 points will be awarded!

Triangle xyz has vertices x(1,3), y(0,0)

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?