What are the solutions of x^2-4x+5=0

If f(x)=x^3 and g(x)=2x+7 when g(x)=-5

He concluded that a heavier object dropped from the same height as a lighter object will land

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?