04 minutes after the experiment has begun the population of bacteria is

# 04 minutes after the experiment has begun the

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0.4 minutes after the experiment has begun, the population of bacteria is increasing at the rate of 10 thousand bacteria per minute. 10 minutes after the experiment has begun, the total population of bacteria is 400.

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Correct! 10 minutes after the experiment has begun, the population of bacteria is increasing at the rate of 400 bacteria per minute. 10 minutes after the experiment has begun, the population of bacteria is increasing at the rate of 0.4 bacteria per minute. 10 minutes after the experiment has begun, the population of bacteria has increased by 400 bacteria. P (10)=0.4 P′(10)=0.4 means that the rate of change of P P when t=10 t=10 is 0.4 thousand bacteria per minute. 0.4 0.4 thousand equals 400 400, so at the time t=10 t=10 minutes the population is increasing at 400 400 bacteria per minute. Question 10 1.67 / 1.67 pts Suppose a tractor tire develops a slow leak. The function V=f(t) V=f(t) describes the volume of air in the tire as it deflates, where V V is in cubic inches, and t t is time in minutes. The time t=0 t=0 is the moment the leak developed. the tire deflates until it is flat Which statement accurately describes the function dVdt dVdt. If we only consider up to a time when the tire is flat, and it is never re-inflated, do we expect dVdt dVdt to be positive, negative, or zero?
dVdt dVdt is the total volume of air in the tire. The units of dVdt dVdt are cubic inches. dVdt dVdt is positive. Correct! dVdt dVdt is the rate that the volume of air in the tire is changing with respect to time. The units of dVdt dVdt are cubic inches per minute. dVdt dVdt is negative. dVdt dVdt is the average rate of change of the volume of air in the tire as it deflates. The units are cubic inches per minute. dVdt dVdt is negative. dVdt dVdt is the total time it takes for the tire to deflate. The units are minutes. dVdt dVdt is positive. dVdt dVdt is the total volume of air in the tire divided by the time it takes for the tire to deflate. The units of dVdt dVdt are cubic inches per minute. dVdt dVdt is positive. The function dVdt dVdt is the derivative of V=f(t) V=f(t) with respect to the time t t. (i.e. dVdt =f (t) dVdt=f′(t)). It describes the rate the volume of air in the tire is changing as it deflates. Since the tire is deflating, dVdt <0 dVdt<0 (the volume of air is decreasing until the tire is flat). The units are cubic inches per minute (the units of V V divided by the units of t t).

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Question 11 1.67 / 1.67 pts The graph of a function D=f(t) D=f(t), the total distance I drove along interstate I- 80 (in miles), is shown in the figure below.

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