A researcher surveys a random sample of high school students in seven states. The survey asks whether students plan to stay in their
home state after graduation. The results, given as joint relative frequencies, are shown in the two-way table.

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)

i pretty sure it is

1.true 2.false? ? i think. .

step-by-step explanation:

the correct answer is 5 6 and 7