What is a multiple of 1/7 I need a answer quickly. its due tonight please help

If each bricks costs and he can only buy one brick how much will it cost him to get the material to put around the outside of his garden?

Darragh has a golden eagle coin in his collection with a mass of 13.551\,\text{g}13.551g. an uncirculated golden eagle coin has a mass of 13.714\,\text{g}13.714g.

$5400 is? invested, part of it at 11? % and part of it at 8? %. for a certain? year, the total yield is ? $522.00. how much was invested at each? rate?