Math 1 Extra Credit - Arithmetic Sequence

In an arithmetic sequence, the 30^th term is 110, and the common difference is 6. What is the first term of the sequence?

In an arithmetic sequence, the 10^th term is 80, and the common difference is 6. What is the first term of the sequence?

The 12^th term of an arithmetic sequence is 50, and the common difference is 3. Find the first term.

For an arithmetic sequence with a common difference of 7, the 9^th term is 85. What is the first term of the sequence?

If the 15^th term of an arithmetic sequence is 120 and the common difference is 5, what is the first term?

In an arithmetic sequence, the 20^th term is 150, and the common difference is 4. Find the first term.

The 13^th term of an arithmetic sequence is 110, and the common difference is 2. What is the first term of the sequence?

If the 35^th term of an arithmetic sequence is 170 and the common difference is 5, what is the first term?

If the common difference of an arithmetic sequence is 4 and the 47^th term is 103, what is the first term?

If the 55^th term of an arithmetic sequence is 220 and the common difference is 5, what is the first term?