The 1st row has 15 chairs.
The 2nd row has 15 + 3 = 18 chairs.
The 3rd row has 18 + 3 = 15 + 2•3 = 21 chairs.
The 4th row has 21 + 3 = 15 + 3•3 = 24 chairs.
The pattern continues, so that the n-th row has 15 + (n - 1)•3 = 3n + 12 chairs.
If there are 15 rows, then the total number of chairs is

where we use the formulas


Answer:
A symbol is a picture, sign, or image that is used to represent an object, concept, or idea. A logo is an example of a symbol, that serves the specific purpose of representing a company, idea, or service. A logo may include words, images, or a combination.
Explanation:
D
I say D because high school has more specific schedules where in college there is more freedom with your schedule.
This is because I’d deep ocean,tsunami waves may appear only a foot or so high.But as they approach the shoreline and enter shallower water they slow down and begin to grow in energy and height.Since the tops of the waves move faster than the bottoms so it causes them to rise faster.So...if a tsunami is in deep waters it does not really hit the shore and splash around to hurt anyone or anything or any people.It is fine because it’s in the middle of the ocean and not on the shoreline.I hoped I helped even a little bit :3
Answer:
It is something that your body converts sugar into
Explanation:
And there are others but I think that is the main one U^U