Arectangle is 70 yards the long, it's area is 3430 yards. what is the width of the field

So me with this math problem. find the value of x the table shows the masses of 50 eggs. mass: 40-44 eggs: 6 mass: 45-49 eggs: x mass: 50-54 eggs: 12 mass: 55-59 eggs: 10 mass: 60-64 eggs: 7 mass: 65-69 eggs: 2 you!

Add or subtract polynomial : –12qr? +13rq?

If f(x) =3x-2 and g(x) =2x+1 fins (f+ g) (x)