Evaluate 2(x+1)-3 when x=6

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

Ihave trouble finding the nth term of a linear sequence

Find the greatest common factor of the followig monomials 21u^5v,3u^4v^6, and 3u^2v^5