GRADE 10 MATH ARITHMETIC SEQUENCE

Which of the following is the recursive formula of the sequence 4, 12, 20, 28, …?

• 𝑎𝑛 = 8𝑛 − 4

• 𝑎𝑛 = 5𝑛−1 + 5

• 𝑎𝑛 = 𝑛−1 − 8

• 𝑎𝑛 = 7𝑛−1 + 8

An arithmetic sequence has a common difference equals to 10 and its 6th term is equal to 52. What is the first term?

• 5

• 7

• 2

• -3

Given the sequence 50, 52 , 54 , which of the following are the next three terms of the given sequence?

• 58 , 56 , 52

• 56 , 52 , 58

• 56 , 58 , 60

• 56 , 58 , 54