Answer:
a₁ = -21 (Given)
a₂ = -28
a₃ = -35
a₄ = -42
Step-by-step explanation:
First term a₁ = -21 (Given)
…………………………………
Second term a₂ :
a₂ = 
…………………………………
Third term a₃ :
a₃ = 
…………………………………
Fourth term a₄ :
a₄ = 
Spungbib don failed math ph nah
Answer:
13
Step-by-step explanation:
We replace each X with a 3, so
4 + 3 + 3 + 3
which equals to 13
Answer:
$6.00
Step-by-step explanation: