Riley used 1/4 as much flour as Gina did when he was baking. Riley used 2 cups of flour. How many cups of flour did Gina use? A) 16cups. B) 8 cups. C) 4 cups. D) 2 1/4 cups

I believe the answer is B. 8 cups

step-by-step explanation:

in the absence of parentheses, i will have to make some assumptions:   i interpret your (3x+5/y^6)(4y^3/5)​ to mean:

3x + 5     4y^(3/5)       (3x + 5)(4)

* =

    y^6             1               y^(6-3/5)

if this is not what you expected, repost your question using parentheses to indicate whether you meant

4y^3

    or   4y^(3/5)

    5