Question

A clothing store is having a sale on T-shirts. The first T-shirt you buy costs $7, and every additional shirt costs

only $5.
Let f(n) be the total cost of n shirts.
f is a sequence. What kind of sequence is it?
Choose 1 answer:
A
Arithmetic sequence
Geometric sequence

Answer 1

Answer: it is an Arithmetic sequence the formula is f(n) =7+5•(n-1)

Explanation:

the first term is the price of a single shirt which is $7 the common difference is the price of any additional shirt, which is $5 therefore and explicit frma for the sequence would be f(n)=7+5•(n-1)

Answer 2

Is an arithmetic sequence

Explanation:

This is an arithmetic sequence, because it is a sequence of numbers in which the common difference between consecutive terms is 5