First time taking a picture but some one help me, this is the last question and I want to die.​

Abank gives 6.5% interest per year. what is the growth factor b in this situation?

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?

If a || b and e || f , what if the value of y ?