The graph is/has

PLZ HELP

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angle measure.

Through: (-3,-3) parallel to y= 7/3x+3

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)?