Mia is factoring the polynomial x2 + 4x - 12. she uses the
steps shown.
in which step did mia make an error?
x2 + 4x - 12
step 1
step 2
step 3
step 4
step 1
x2 +6x - 2x - 12
step 2 |(x2 +6x) = (2x+12)
step 3
x(x + 6) - 2(x+6)
step 4
(x + 6)(x+2)

A33 gram sample of a substance that's used to detect explosives has a k-value of 0.1473. n = noekt no = initial mass (at time t = 0) n = mass at time t k = a positive constant that depends on the substance itself and on the units used to measure time t = time, in days