Which table shows a proportional relationship?

1# r 5 10 15 20 25
s 1 2 3 4 5

2# x 1 2 3 4 5
y 4 7 10 13 16

3# b 0 3 5 7 9
c 0 4 8 12 16

4# p 1 3 5 7 9
q 6 8 10 12 14

Apatient is to take 60 mg of an antibiotic on day 1, take 45mg on days 2 and 3, take 30mg on days 4 and 5 and take 15 mg on days 6 and 7. how many total mg will the patient take?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie

Alistair has 5 half-pounds chocalate bars. it takes 1 1/2 pounds of chocalate,broken into chunks, to make a batch of cookies. how many batches can alistair mke with chocalate he has on his hand?