instantaneous speed is measured

a. at the starting point.

b. when the object reaches its destination.

c. at a particular instant.

d. over the duration of the trip.

Let f(x) = x4- 8x2 . find the relativeextrema of this function using the second derivative test.

Which of the following explains why it took so long for the public to accept the negative health effects of smoking? a)people were waiting for counter reasons, and those were presented.b)scientists had not completely finalized their results, which took 30 years.c)cigarettes were cheaply available and media channels were very inefficient.d)cigarette manufacturers were trying hard to bring an alternative into the market

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?