Sequences, Series, and Sigma!

Find the next two terms in arithmetic sequence: -2, -5, -8, -11...

• -13, -16

• -12, -13

• -15, -19

• -14, -17

For the arithmetic sequence, find the 28th term in the sequence for which a₁ = 18 and d = 2

• 56

• 74

• 72

• 64

What is the first term of the sequence for which d = -5 and a₇ = -11?

• 19

• -46

• 46

• -19

Find the 40th term of the sequence -18, -10, -2, 6...

• 199

• 284

• 312

• 294

Which of the following terms are included in the 4 arithmetic means between 90 and 108

• 92.9

• 97.2

• 100.8

• 95.8

Find the sum of the first 51 terms in the series 7.4, 7.8, 8.2, ..., 27.4

• 887.4

• 860

• 848.2

• 906

Determine the common ratio and determine which of the following terms belong in this sequence. Select all that apply.

-3, 6, -12, 24, ...

• -512

• -768

• -32

• -12288

If r = 1/2 and a₅ = 10, find the first term in the sequence.

• 2

• 1000

• 160

• 1/2

Which of the following is NOT one of the first 3 terms of the sequence for which a₆=1.6 and r = 0.5

• 25.6

• 51.2

• 5.4

• 12.8

Which of the following is NOT one of the three geometric means between 3 and 15.875?

• 10.125

• 6.75

• 4.5

• 12.875