Algebra Lesson 3-4 Video Quiz

What is an arithmetic sequence?

• A sequence of prime numbers

• A sequence of numbers dividing by the same amount

• A pattern of numbers multiplying by the same amount

• A pattern of numbers adding or subtracting by the same amount

What does the common difference 'd' represent in an arithmetic sequence?

• The number being divided in the sequence

• The total number of terms in the sequence

• The number being multiplied in the sequence

• The number being added or subtracted in the sequence

What is the formula for finding the nth term in an arithmetic sequence?

• a_n = a_1 * D^(n - 1)

• a_n = a_1 + (n - 1) / D

• a_n = D / (a_1 + n - 1)

• a_n = a_1 + (n - 1) * D

If the first term of an arithmetic sequence is 1 and the common difference is 9, what is the formula for the nth term?

• a_n = 9n

• a_n = 1 + (n - 1) * 9

• a_n = 1 + 9n

• a_n = 9 + (n - 1) * 1

How do you find the 100th term of the sequence 5, 7, 9, 11, 13?

• a_100 = 2 * 100 - 3

• a_100 = 2 * 100 + 3

• a_100 = 5 + (100 - 1) * 2

• a_100 = 100 * 2 + 5

What is the 22nd term of the sequence 1, 10, 19, 28?

• 198

• 209

• 202

• 190

If the common difference of a sequence is -3, what is the formula for the nth term given the first term is 13?

• a_n = -3n + 16

• a_n = 13 + (n - 1) * 3

• a_n = -3n + 13

• a_n = 13 - (n - 1) * 3

Which term of the sequence 5, 7, 9, 11, 13 is 97?

• 48th term

• 47th term

• 49th term

• 46th term

What does 'a sub 1' represent in the formula for an arithmetic sequence?

• The common difference

• The last term of the sequence

• The first term of the sequence

• Any term of the sequence

If the sequence is 3, 6, 9, 12, what is the common difference?

• 4

• 3

• 2

• 5