Hi! If I could get some assistance with these that would be great! Thank you so much and let me know if you have any questions!!

Determine the indicated som: -2-5-8... -J. - Determine the indicated sum: 5+ 10 + 20+ ... + 5,4 - A theater has 27 rows of seats. If there are 19 in the first row, 22 in the and, row, 25 in the 3row and so on, how many seats are there in all. Is the following statement true or face [ (-3) " +5 > [ (-25- 3 Determine the sum of the infinite series . 48+ 36+274 ... - The sum of the first 3 terms of an arithmetic sequence is 60 & the 4 th term is 12. The 15 term is The common difference is