Kerry has 5 metal and 3 wood paperweights in her collection. She has twice as many glass paperweights as metal paperweights. Write an expression to represent the total number of paper weights in her collection. Then find the total number of paperweights.

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?