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Andrea is designing the seating arrangement for a concert in her local park. To give everyone a good view, each row must have 4 more seats than the row before it, and the 1st row can only have 10 seats. Explain to andrea how to create an equation to predict the number of seats in any row. Then, using your equation, show your work to determine the number of seats in row 20

Respuesta :

The number of seats in row 20 is; 86 seats

What is the Arithmetic Sequence?

We are going to use the arithmetic sequence formula since we require the previous term in a sequence.

The arithmetic sequence formula is;

aₙ = a + (n − 1)d,

where;

a is the first term of the sequence

n is the position of the term in the sequence

d is the common difference

aₙ  is the nth term of the sequence.

Our sequence is 10, 14, 18, 22 up to row 20.

Using the sequence formula;

a_20 = 10 + (20 − 1)4.

a_20 = 10 + (19* 4)

a_20 = 10 + 76

a_20 = 86.

Thus, the number of seats in row 20 was 86 seats.

Read more about Arithmetic Sequence at; https://brainly.com/question/6561461

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