Which table shows a proportional relationship between x and y?

x 1 2 3 6
y 1.5 3 6 9

x 3 5 7 8
y 1.5 2.5 3 4.5

x 2 4 5 6
y 6 12 18 21

x 1 3 4 5
y 50 150 200 250

B - x 1 3 4 5 y 50 150 200 250

Step-by-step explanation: The equation is y = 50x

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)