A theatre has 8 seats in the front row. Each row has 2 more seats than the row in front of it. a. How many seats are in the 2nd, 3rd, and 4th rows? (3/1) 2nd=10, 3rd = 12, 4th = 14 b. Write the general term tn for this sequence (1 T/1) tnatn +2. c. Use the general term to determine how many seats are in the 20th row of the theatre tna (1 T/1) [3 App) 3. Show how to use Pascal's triangle to expand (x + 2)