Find the GCF between 6x^2y and 20xy^3

A.) 2xy

B.) 6x^2y

C.) 20xy^3

D.) 120x^2y^3

Simplify (a/b - b/a) times (a - a^2/a+b) a - a^2/a=b is a mixed number

Jada has a meal in a restaurant she adds up the prices listed on the menu for everything they ordered and gets a subtotal of $42.00. when the check comes, it says they also need to pay $3.99 in sales tax. what percentage of the subtotal is the sales tax

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points