What order does not represent a function {(5, -1),(-6, -7), (-5, - 7), (9,6)} {(8,-1), (-4,-1), (-6,5), (4, -2)} {(8,6),(-1,2), (8, -8),(1,9)}
{(-1,1), (7,-2), (-7, -3), (0, –3)}

u rich

step-by-step explanation:

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)

a. is correct