Abiscuit recipe calls for 2 pounds of all purpose flour and .75 pound of butter, what would be the baker’s percentage for butter if the recipe were converted to a formula with all purpose flour as the main ingredient?

For this case we have the following data:

The recipe for cookies requires:

If the flour becomes the main ingredient, it will be represented by 100%.

Now, you want to know the percentage of butter, taking into account that the flour represents 100%. For this, we use a rule of three:

2 pounds of flour         ------> 100%

0.75 pounds of butter ------> x

Where x represents % butter, since flour represents 100%.

So, we have:

Thus, butter represents 37.5% of the recipe.

37.5%

f(x) = x^3 -2x^2 -3x

x( x^2 -2x-3)

x( x^2 +x -3x -3)

x( x(x+1) -3(x+1))

x( x-3)( x+1)

so zeroes are 0, 3,-1

its (2) option