A population of bacteria can be modeled by P(t) = 22,000/1+1.2e^-kt. Where t is time in hours and k is constant. After 1 hour the bacteria population is 10,532. What is the value of k rounded to 4 decimal places? My son has already submitted his answer on an online exam, but the teacher didn't explain how they got the answer, and I'm not the greatest with math.

What is the diagram u didn't post that

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )

40 mph is a possibility of a speed