An online shopping company has t-shirts for sale. The sales tax rate is 7.25% on each shirt ordered, and there is a flat fee of $4.75 shipping for the entire order. There is no limit on the number of t-shirts one person can purchase. Considering an expression that models the total cost on any online purchase, what is the value of the constant term and what does it represent?

A
0.725 represents the sales tax

B
7.25 represents the sales tax

C
4.75 represents the shipping charge

D
7.25 represents the shipping charge

C) 4.75 represents the shipping charge

The expression that models the cost is 1.0725x+4.75

The 1.0725x represents the cost after the 7.25% tax has been added on. Then the 4.75 is added on as well which is the flat shipping fee. It is considered constant as it does not change and stays at 4.75; this is in contrast to the variable term 1.0725x which does change when x changes (ie when you buy more shirts and increase x, then 1.0725x gets larger)

its line 2 i just added the rest or else it wouldn't let me answer