Row 15 has 41 seats, and the entire section has 493 seats.
We can write the explicit formula for an arithmetic sequence to represent this, since we add 2 each time:
13+2(n-1)
Using 15 for n,
13+2(15-1) = 13+2(14) = 13+28 = 41
To find the total number of seats, we evaluate the sum

Using technology to evaluate this sum, it is 493.
Answer:
non of the above thanks
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Answer:
21
Step-by-step explanation: because i said so
Answer:
243
Step-by-step explanation:
STEP 1: Evaluate the variables
9(2 + (5)(5))
STEP 2: Then from there you can multiply the equation
18 + 225 = 243