Porfa ayuda con este ejercicio, gracias. a.(-x+5)=9x^2+9x b(-x+5)=9x^2+9x c.---(4x^3y-5xy^3)=16x^5y^3-20xy^3x ^2y^2 d.(x^3+3)=xy^2x^3-3x^3y+3xy^2-9y e.(5x^2)=10x^5+25x^4-15^2

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?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

It is saturday morning and jeremy has discovered he has a leak coming from the water heater in his attic. since plumbers charge extra to come out on the weekends, jeremy is planning to use buckets to catch the dripping water. he places a bucket under the drip and steps outside to walk the dog. in half an hour the bucket is 1/5 of the way full. what is the rate at which the water is leaking per hour?