Question

HELP PLEASE!!!!! :O ---Which expression describes the rule of this sequence? (Question) 7, 14, 21, 28, 35, ?
A 7+n
B 7^n (Carrying the n)
C 7n
D n+ 7+7

Answer 1

THis is an arithmetic sequence.
\[a_{n} = a_{1} + (n - 1)d\]
Now, plug in 7 for a_1 and 7 for d
\[a_{n} = 7 + (n - 1)7\]\[a_{n} = 7 + 7n - 7\]\[a_{n} = 7n\]\THere you go :)

Answer 2

np :)