It costs $3.45 to buy 2 lbs of chopped walnuts. How much would it cost to purchase 7 lbs of walnuts? Explain and show your reasoning its ratios an rates

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Graph the linear function using the slooe and y intercept