Giving an arithmetic sequence with a33=66 and a common difference of 2.

Find a1;

Hint: Use an = a1 + (n-1) d

a1= ___________

Find the sum of the first 30 terms:
Hint: Use an = a1 + (n-1) d and Sn = n/2 (a1 + an)

S30 = __________