An environmentalist finds that a certain type of tree grows in such a way that its height h(t) after t years is changing at the rate of
h'(t) = 0.2t2/3 + vt ft/yr
if the tree was 2 feet tall when it was planted, how tall will it be in 27 years?

The train station clock runs too fast and gains 5 minutes every 10 days. how many minutes and seconds will it have gained at the end of 9 days?

What is the slope of the equation y =

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.