Christine received a $90 gift card for a coffee store. She used it in buying some coffee that cost $8.03 per pound. After buying the coffee, she had $41.82 left on her card. How many pounds of coffee did she buy?

22 points algebra 1//sum and product of rational and irrational numbers. dont have to do all 4 if could much : )) write an example: 1) how the product of two identical irrational numbers can be a rational number. 2) how the product of two different irrational numbers can be a rational number. 3) write a quotient of intergers that is not a real number. 4) is the set of positive irrational numbers closed for the operation of division? if not give a counter example.