Ok so I have a sneak attack for a test(from my teacher he pop quizzed us last minute)And I was wondering what is the best way to cope with this sneak attack?

What is a possible solutions of the x> 3?

Louise measured the perimeter of her rectangular scrapbook to be 154 cm. if the scrapbook is 45 cm wide, how long is the scrapbook?

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?