I think this is the answer. i havent done any math for a while.
9=3^2
3^(2x)=(3^2)^(3x-4)
3^(2x)=3^(6x-8)
2x=6x-8
0=4x-8
8=4x
2=x
The factory made 3 batches of cookies.
(See my work below)
Sidh will need 0.375 pound of watermelon or 3/8 in fraction form to make the fruit salad. When you divide the original 3/4 into two you get this.
3+6x+3x+ 6 = 180
9x + 9 = 180
9x = 171
x = 19