A student can make a weekly salary of $200 plus 15% commission on sales by working at Hollister or a weekly salary of $300 plus 10% commission on sales at Old Navy. For what amount of sales do these jobs pay the same? What information can we extrapolate from the graph?

Can someone me with my hwplz(only the circled ones)

Agraph of a trapezoid can have diagonals with slopes that are negative reciprocals and two pairs of adjacent sides that are congruent, true or false, and why

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?