A sample of bacteria is decaying according to the half-life model f(t) = Ne-0.226t, where N is the initial sample size and t is time in hours. At t = 4, there are 25 bacteria remaining. What
was the initial sample amount? Round your answer to the nearest whole number, and do not
include units.

439400

step-by-step explanation:

130^2 = 16900

16900*26 = 439400

its c or d   take a lucky guess my dude

the system of inequalities is

step-by-step explanation:

step 1

find the equation of the dashed line

we have the points

(0,0) and (3,1)

the line passes through the origin, so, is a direct variation

find the slope

the equation of the dashed line is

the solution of the inequality a s the shaded area above the dashed line

therefore

the equation of the inequality a is

step 2

find the equation of the solid line

we have the points

(4,0) and (0,4)

find the slope

the equation of the solid line is

the solution of the inequality b s the shaded area below the solid line

therefore

the equation of the inequality b is

step 3

the system of inequalities is