Question

PLEASE HELP SUPER EASY!!!

Answer 1

A1. 12 i.e option D

A2. 3n-7 i.e option A

A3. -6n+20 i.e option D

A4. -70 i.e option C

Step-by-step explanation:

aₙ = a₁ + (n - 1) × d  

aₙ = the nᵗʰ term in the sequence

a₁ = the first term in the sequence

d = the common difference between terms

Using the above formula to solve the first part, we have :

• -8 = a₁ + (2-1) × 5

• -13 = a₁

• a₆ = -13 + (6-1) × 5

• a₆ = 12

For the second part, we have :

• aₙ = -4 + (n-1)×3

• aₙ = -4 + 3n -3

• aₙ = 3n-7

For the third part, we have :

• a₁=14 ; d=-6

• aₙ = 14 + (n-1)×(-6)

• aₙ = -6n + 20

For the fourth part, we have :

• aₙ = 14 + (15-1)×(-6)

• aₙ = -70