Which scenario can be modeled using the graph below?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

Which ordered pair is a solution of the equation? 2x+3y=10