Find w′′(8). Using correct units, interpret the meaning of w′′(8) in the context of the problem.

If i got an 1040 on my psat, what are the chances of being able to get a 1400 on the sat. and are there any recommended ways to study.

17 a tourist was planning a trip by car for travelling at some constant speed for 2.5 hours. however, he found that if he increases the speed by 20 km/h he can cover the same distance in 30 minutes less time than it was planned. what was the planned speed of the tourist, in km/h?

Afish fossil is found in a rock. a foot bone and tooth are found in an older layer of the same rock. what can scientists learn from the rock? a) the area changed from land to water. b) the area changed from water to land. c) the area has always been land. d) the area was once an ocean.