ONLY No. 8, FAST PLEASE

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?

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

What are the values of each variable in the diagram below?