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September 19, 2014

September 19, 2014

Posted by **Emily** on Friday, October 29, 2010 at 8:05pm.

a. write 2 different expressions for the total number of seats in the auditorium. One expression should use addition: the other should involve multiplication. Write an equation that uses these two expressions.

b. Solve the auditorium problem, explaining your reasoning.

- Math -
**Reiny**, Friday, October 29, 2010 at 10:12pmYour problem is dealing with an arithmetic series, where

a=20 , d=1, and n = 50

Sum(n) = n/2[2a + (n-1)d]

= 25[40 + 49(1)]

= 2225

- Math -
**sherri**, Thursday, April 5, 2012 at 9:33pmwhat are two different expressions for the total number of seats in the auditorium

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