The coordinates of the vertices of a quadrilateral are R(-1, 3), S(3, 3),
T(5, -1), and U(-2, -1).
Find the perimeter of the quadrilateral. Round to the
nearest tenth.

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

5x+10 is the correct one

hope this