Which situation can be represented by the opposite of -7?

a. you take an elevator down 7 floors.
b. you take an elevator up 7 floors.
c. the temperature drops 7°c.
d. a stock decreases 7 points.

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

the answer is c. 23/3