Simplify (6^-2) (3^-3) (3*6)^4 Someone please help me simplify this as much as possible. I don't even need the answer, just need to simplify it.

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.

If 30 lb of rice and 30 lb of potatoes cost ? $27.60? , and 20 lb of rice and 12 lb of potatoes cost ? $15.04? , how much will 10 lb of rice and 50 lb of potatoes? cost?

Multiplying fractions by whole number 5 x 1/3=?