Carmen weighs y kg and fanny is 10 kg heavier than carmen. if their total weight is 73 kg, find the weight of fanny.

Steve wants to develop a way to find the total cost of any item including sales tax. the sales tax in his city is 6%. his friend jenna writes the expression x + 6x where x is the cost of the item. explain whether her expression is correct based on the situation.

Precalculus question, image attached.

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i