Help please. Will give brainlist Evaluate the expression when a = -9 and b = - 4.
a? - 2(b + 12)

-25

Step-by-step explanation:

-9 - 2(-4 + 12) = -25

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