Which expression is equivalent to -3(2m-1)-n? A.6m-n-3 B.6m-n+3 C.-6m-n-3 D.-6m-n+3

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

If i have 20$ and i gave 5$ away how much i got

You are designing a rectangular pet pen for your new baby puppy. you have 30 feet of fencing you would like the fencing to be 6 1/3 feet longer than the width