Question

Determine if the sequence is arithimetic if it is find the common difference and the explicit formula
1. -10 , 10 , 30 , 50
A. Common difference : d=-20
Explicit an =10-20n
B. Common difference : d=18
Explicit an=-28+18n
C. Common difference d=20
Explicit an=-30+20n
D. Common difference : d=-18
Explicit : an=8-18n

Answer 1

@101

Answer 2

i did the calculations and i got -20

Answer 3

@iGreen

Answer 4

@dan815

Answer 5

@thomaster

Answer 6

@eliassaab