find the area of the shaded part of the rectangle if the area of the big rectangle is 6 times the area of the unhanded rectangle

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

step-by-step explanation:

for volume, add base x height x width

so mark-up is 0.4 multiplied by 180 = 72