Question

H_E_L_P_!

Tell whether the sequence is arithmetic. If it is, what is the common difference?

15, 19, 23, 27 . . . .

A) yes; 15/19
B) yes; 4
C) yes; 34
D) no

Answer 1

you have to find the difference in between each number...if the next number can be found by adding/subtracting, then it is an arithmetic sequence. However, if the next number is found by multiplication, then it is a geometric sequence.
so what is the difference between 15 and 19.....answer is 4
difference between 19 and 23....answer is 4
same for the rest of the numbers.
To find the next number you would simply add 4 to it.

so it is arithmetic and the common difference is 4

Answer 2

THANK YOU !!!