Sarah is a gymnast who can do 12 cartwheels in 3 minutes. If she reains her rate, how many cartwheels how many cartwheels can she do in 18 minutes?

Sarah can do 72 cartwheels in 18minutes

Step-by-step explanation:

well I'm not the best at explaining, but you set up a proportion for it and then solve it!

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