Which problem solving strategy would be best to solve this problem? You are decorating a rectangular table to surprise your friend with a party. The table is 4 feet by 10 feet. If you want to place a balloon in each corner and every 2 feet along the table, how many balloons will you need?
A. guess, check and revise
B. make a model or diagram
C. write an equation
D. make a table, chart or list

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?