Astudent submitted the following work. is it correct the work correct the answer is wrong because the student did not distribute correctly the answer is wrong because the student did not combine like terms correctly the answer is wrong because the student did not multiply positive and negative numbers correctly

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)

The jewelry store is having a sale. necklaces that were regularly priced at $23.50 are on sale for $18.80. what is the percentage of decrease in the price of necklaces?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- 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. 3- 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 part b?