APFIVE Instantaneous Rate of Change of Ozone
The concentration of ozone is described by the function $$F(t)=20*t^2+30*t+50$$. Which of the following expressions represents the instantaneous rate of change of the ozone concentration?
A
$$20*t^2+30$$
B
$$40*t+30$$
C
$$40*t^2+30$$
D
$$40*t+50$$
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