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Maths-

General

Easy

Question

A city sets up 14 rows of chairs for an outdoor concert. Each row has 2 more rows than the row in front of it. Graph the sequence for the first 5 rows.

hint Hint:

A sequence is said to be arithmetic if the common difference is always constant.

The General formula of any AP is $a subscript n equals a subscript 1 plus left parenthesis n minus 1 right parenthesis d$ .

The correct answer is: a_n=12+2n.

A city sets up 14 rows of chairs for an outdoor concert. Each row has 2 more rows than the row in front of it

We have to find the graph of the sequence for the first 5 rows

Step 1 of 1:
Here it will be an AP, with first term 14 and common difference 2.
So, The explicit formula will be
$table attributes columnalign right left right left right left right left right left right left columnspacing 0em 2em 0em 2em 0em 2em 0em 2em 0em 2em 0em end attributes row cell a subscript n equals 14 plus left parenthesis n minus 1 right parenthesis 2 end cell row cell a subscript n equals 12 plus 2 n end cell end table$
Now the graph will be

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