18 !
naomi recorded the total weight of different numbers of apples. her results are shown by using the scatterplot and the trend line shown below.
for which number of apples is the prediction of the total weight an extrapolation?
6
12
15
18

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

8121 because

130,000 divided by 16 is 8121