magnitude = sqrt(6^2+4^2)
= sqrt ( 36+16)
=sqrt (52) = 7.2
angle = tan^-1(6/4) = 56 degrees
after 8 hours there are 995 bacteria cells left
let y be the amount after 8 hours
the multiplying factor is 100 - 5 = 95 % = 0.95
y = 1500 ×
= 995
More information is needed
Z = -2/3a
divide by -2/3 on both sides
a = z divided by -2/3
a = -3/2z