Question

A sequence is represented by the formula an=-5+a(n-1). If a4 = 20, what is the 6th term in the sequence?

Answer 1

Answer:

10

Step-by-step explanation:

Formula :

• aₙ = -5 + aₙ₋₁

Finding a₅ :

• a₅ = -5 + a₄
• a₅ = -5 + 20
• a₅ = 15

Finding a₆ :

• a₆ = -5 + a₅
• a₆ = -5 + 15
• a₆ = 10