What is 7/10 times 8/21 in simplest form? show work

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?

What is the solution of the systems of equations? y=2/3x+3 x=-2

This question awards 100 ! i really don’t want to fail i will also mark you !