Question

The first row of seating in section J of the stadium has 11 seats. In all there are 7 rows of seats in section J each row containing four more seats than the row preceding it How many seats are in section U?

Answer 1

The total number of seats in section U is 322.

Step-by-step explanation:

The first row of seating in section J of the stadium has 11 seats. In all there are 7 rows of seats in section J, each row containing four more seats than the row preceding it.

To find the total number of seats in section U, we can use the formula for the sum of an arithmetic series. The formula is given by: S = (n/2)(2a + (n-1)d), where S is the sum, n is the number of terms, a is the first term, and d is the common difference.

In this case, the first term (a) is 11, the common difference (d) is 4, and the number of terms (n) is 7. Plugging these values into the formula, we get: S = (7/2)(2(11) + (7-1)(4)) = 7(22 + 6(4)) = 7(22 + 24) = 7(46) = 322.

Therefore, there are 322 seats in section U.