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:
This finely tuned system carries oxygen, nutrients, electrolytes, and hormones throughout your body. Interruptions, blockage, or diseases that affect how your heart or blood vessels pump blood can cause complications such as heart disease or stroke.
An economic terminology which describes the option of mowing lawns is opportunity cost.
<h3>What is an
opportunity cost?</h3>
An opportunity cost is also referred to as alternative forgone and it can be defined as the value, profit or benefits that are given up by an individual or business firm, in order to choose or acquire something deemed most significant at the time.
In this context, we can infer and logically deduce that an economic terminology which describes the option of mowing lawns over animal rescue is an opportunity cost.
Read more on opportunity cost here: brainly.com/question/8846809
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