two trains depart from a city center in opposite directions. train a heads west at 60 miles per hour, train b heads east at 75miles per hour. when will the trains be 500 miles apart

Can someone me out here and the tell me the greatest common factor

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

Let event a = you roll an even number on the first cube.let event b = you roll a 6 on the second cube.are the events independent or dependent? why?