Find the slope of each line then tell what the slope represents

How many real and imaginary solutions does the equation x^2-3x=-2x-7 have?

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)?

What are the solutions of the system? solve by graphing. y = x^2 + 3x + 2 y = 2x + 2