Quadratic and Arithmetic Sequences

Find the 18 term in the sequence: 4, 9, 16, 25

• 324

• 361

• 289

• 400

U_n = 3n² + n - 1, what is U₁₀

• 306

• 307

• 308

• 309

Find the 25th term of the sequence if a₁ = 5 and d = 0.5

• 18

• 17

• 15

• 14

Create the formula for the arithmetic sequence:
5, 105, 205, 305...
then find the 22nd term.

• a₂₂ = 1905

• a₂₂ = 2105

• a₂₂ = 2195

• a₂₂ = 2305

Identify the common difference.
-21, -18, -15, -12, ...

• 4

• 3

• -4

• -3

The next two terms of the sequence 4,7,10,13 are

• 16 and 19

• 15 and 19

• 16 and 18

• 15 and 18

Find the values of a in the following arithmetic sequence

5, 9, a, 17, 21

Find the values of a in the following arithmetic sequence

1, 6, a, 16, 21

Find the nth term of the following sequence

-1, 4, 9, 14, 19

Calculate the difference between the 10th term and 50th term of the sequence 9, 14, 19, 24, ... ...