I need help with this math question HELP

You paint a 1/2 of a wall in 1/4 hour. how long will it take you to paint one wall

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Acollection of coins has value of 64 cents. there are two more nickels than dimes and three times as many pennies as dimes in this collection. how many of each kind of coin are in the collection?