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:
Polls that lead the media, voters, and candidates to place too much emphasis on who is ahead in a campaign instead of focusing on the issues is known asExplanation:
Answer:
D. All of the above
Explanation:
Sporting officials are typically responsible for......starting and ending the competition, ensuring the game flows properly AND monitoring pregame activities.