Convert the rectangular equation into a polar equation. a) r= 8cos theta

b) r= sqrt8 cos theta

c) r= 8sin theta

d) r= sqrt8 sin theta

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)

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.