Jamal bought 4 pounds of blueberries for $12. which of the following proportions could be used to him figure out how much 2 pounds would cost?

[10 points, algebra 2-simplifying complex fractions]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?

If you have a set of parallel lines a and b cut by transversal x, if angle 1 = 167 degrees, what is angle 4 and why. also what is the measure of angle 5 and why? you need to use the names of the angle relationship and explain.