5 Eric is building a fence around the perimeter of a garden in his backyard. The yard is shaped like a rectangle with a width of 15 yards less than the length. He calculates that he needs 70 feet of fencing, Which equation accurately models this problem, with L as the length?

Which best describes the strength of the correlation, and what is true about the causation between the variables? it is a weak negative correlation, and it is not likely causal. it is a weak negative correlation, and it is likely causal. it is a strong negative correlation, and it is not likely causal. it is a strong negative correlation, and it is likely causal.

Which one is the correct answer, and why?

What are the solutions of the equation x4 + 6x2 + 5 = 0? use u substitution to solve.