Answer:
An altitude of any triangle is a line from a vertex that intersects the opposite side at the right-angled vertex.
Therefore yes it does intersect the opposite side.
It is 10 times as much as .008
Do you see the pattern?
So it is really easy to solve firstly we can see how much does the first 10 boxes make which makes around 55$ obviously. Secondly 45$ for the next 10 boxes.
So for now we can simply calculate that we have spent around 100$ which means 20 boxes. The remaining money left is 77$ so we can buy 77/3.5 = 22 only 22 boxes with that money. Hence a total of 42 boxes.