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
People work together, on the side of the planet that wasn't damaged, you could grow a lot more plants and stop cutting trees. This could repair the damage over a few hundred years, maybe more.
Answer:dream plays minecraft everyday he uses a laptop or a xbox!!
Explanation:
Can you please give us paragraph 11?
Writing stuff down helps you to remember stuff, make flashcards for important vocabulary, when using flashcards to practice mark each time you get it right or wrong to know which ones you need more practice with, use brainly if you have any questions about what your working on, use quizlet for vocab flash card games, and look up practice questions online for the subject you are working on.