PLZ HELP!!>\\< [Maximum mark: 6]
The equation of a line L, is 3.x = 12 - y.
(a) For the line L1, find:
(i) the r-intercept;
(ii) the gradient.
A second line, L2, intersects the r-axis at P(2.0) and is parallel to L.
(b) Find the equation of L2, giving your answer in the form y=mr +c.
(c) Calculate the y-intercept of L2.

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)

just sum

10 + 10 = 20

b. hannah is playing with her cousin at