Answer:
D α H
k = D/H
k = 3.50
Step-by-step explanation:
Amount paid, D is directly proportional to the number of hotdogs, H
D = $3.50 per hot dog
D = $3.50 is directly proportional to 1 hotdog
Hence,
D α H
D = kH
k = proportionality constant
H = 1
3.50 = k
k = 3.50
k = D/H
If this is the case, then you know by the polynomial remainder theorem that

is a factor of

, so there is some polynomial

such that
12/30 = 2/5
12/30 = 0.4
Answer: 2/5 or 0.4
*Hope that helps and Enjoy Brainly :)