Paul bought a package of 6 spiral notebooks for a total cost of $13.50. which equation represents p, the cost, in dollars of each notebook?

Which function is represented by the graph

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?

Is the figure congruent? yes or no?