Which set of ordered pairs represents a function? select one: a. {(0, 1), (1, 3), (1, 5), (2, 8)} b. {(0, 0), (1, 2), (2, 6), (2, 8)} c. {(0, 0), (0, 2), (2, 0), (2, 4)} d. {(0, 2), (1, 4), (2, 6), (3, 6)}

D. is the answer

Step-by-step explanation:

A. is not a function because x  =  1  produces  y  =  3  and  y  =  5

B. is not a function because x  =  2  produces  y  =  6  and  y  =  8

C. is not a function because x  =  2  produces  y  =  0  and  y  =  4

D. is a function Since there is one value of  y  for every value of  x

Hope That Helps!

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)