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


For tyler to make his speech on skateboarding for his physics class more interesting, Tyler should; include striking visual aids.
<h3>Importance of Visual Aids</h3>
Since Tyler is preparing a speech on skateboarding, he needs to use visual aids to make it more interesting.
Now, visual aids are unique techniques and methods that are used to present the specific topic in front of audience and improve the audience's understanding.
These visual aids could include, graphs and pictures to use to illustrate points better and make a very good visual impression.
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In Project development, Agile Practice is one of the best methods of product delivery because the team is self-organizing and self-managing
<h3>Trait of Agile</h3>
Apart from the two common trait stated above, the agile team is very dynamic and adapts to changes even during production or at any point in the product development cycle.
Other Traits include but not limited to:
- Self-Organizing & Self-Sufficient
Learn more about Agile Practice here:
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