Evaluate the summation of 3 n plus 2, from n equals 1 to 14
answers:
39
49
340
343

343

Step-by-step explanation:

for 3n+2

5+8+11+14+17+20+23+26+29+32+35+38+41+44 = 343

answer: - (a)

(b) 88 seats

step-by-step explanation:

given: in an auditorium, there are 22 seats in the first row and 28 seats in the second row.

thus first term=

second term=

the number of seats in a row continues to increase by 6 with each additional row.

⇒d= 6

a) given formula :

b)   let the number of seats (n) = 12

substitute n=12 in the explicit rule formed in (a)

∴there are 88 seats in 12 rows.

6.25 grams

step-by-step explanation: