Billy buys light bulbs in packs of 8 for $20. The shipping cost is $10 regardless of the number of packs bought. Billy only had $120 to spend. The cost per ligh tbulb with respect to number of packs bought can be modeled by a function. Select the statement that correctly describes the domain of the function. If the statement is incorrect explain why.
A. The domain is the set of all real numbers greater than or equal to 1 and less than or equal to 6
B. The domain is the set of all real numbers greater than or equal to 0 and less than or equal to 5
C. The domain is the set of all integers greater than or equal to 1 and less than or equal to 6
D. The domain is the set of all integers greater than or equal to 0 and less than or equal to 5
can you use this too to figure it out
