You have not given us any of the steps that Ricardo took to simplify the
expression, and you also haven't given us the list of choices that includes
the description of his mistake, so you're batting O for two so far.
Other than those minor details, the question is intriguing, and it certainly
draws me in.
If Ricardo made a mistake in simplifying that expression, I'm going to say that
it was most likely in the process of removing the parentheses in the middle.
Now you understand that this is all guess-work, because of all the stuff that you
left out when you copied the question, but I think he probably forgot that the 3x
operates on everything inside the parentheses.
He probably wrote that 3x (x-3) is
either 3x² - 3
or x - 9x .
In reality, when properly simplified,
3x (x - 3) = 3x² - 9x .
All we have to do is divide how many blueberries he ate in an hour (80) by how many times 15 minutes is in 1 hour (4)
80 ÷ 4 = 20
We can check our work by multiplying 20 by 4
20 x 4 = 80
Therefore, David ate 20 blueberries in 15 minutes
Hope this helps you!
Always remember you are a Work Of Art!
- Nicole :) <3
Answer:
Step-by-step explanation:
Find the expression to represent how much you would expect a cub to weigh 
days after it's born as exponential growth function 
where 
is the initial panda's weight and 
is the rate of growth.
A newborn red panda weighs 100 grams, then 
A healthy cub gains about 7% of its newborn weight per day, then
Hence,
Sense, the recipe would then have to be using as a whole of 4/5 of water, we would then, have to divide 4/5 by 1/3, and by us doing this, we would then get our answer as the following:
1-8 is simple. Just subtract 8 from 1. so 1-8 = -7
