Final answer:
Ebony will spend a total of $16.2 on the ingredients.
Step-by-step explanation:
To find the total cost of the ingredients, we need to multiply the weight of each ingredient by its cost per pound and then add them up.
For sugar, since Ebony is purchasing 3.5 pounds and the cost is not given, I will assume that the cost of sugar is the same as the cost of flour and cocoa powder, which is not specified in the question. Let's say it is $2 per pound.
So, the cost of sugar = 3.5 pounds * $2 per pound = $7.
Next, we have 2.6 pounds of flour and 2 pounds of cocoa powder. Assuming that the cost of flour and cocoa powder is $2 per pound as well, the cost of flour = 2.6 * $2 = $5.2 and the cost of cocoa powder = 2 * $2 = $4.
Finally, to find the total cost, we add up the costs of sugar, flour, and cocoa powder: $7 + $5.2 + $4 = $16.2.
Therefore, Ebony will spend a total of $16.2 on the ingredients.