Figure shows the length, l, in cm, of a sturgeon (a type of fish) as a functionof the time, t, in years.(a) is the function increasing or decreasing? is the graph concave up or concave down? this function is increasing and the graph is concave down.(b) estimate the average rate of growth of the sturgeon betweent= 5andt= 15. giveunits and interpret your answer in terms of the sturgeon. during this five year period, the sturgeon’s length increased at an average rate of 6 cen-timeters per year.

People seem to like movies about comic book heroes. the histograms below show the gross revenue (in hundreds of millions of dollars) of movies based on heroes from the two most popular comic book companies. which pieces of information can be gathered from these histograms? choose all answers that apply: movies based on marble heroes bring in more money on average.(choice b)ball marble movies bring in more money than all dx movies.(choice c)cthe amount earned by dx movies varies much more than the amount earned by marble movies.(choice d)dnone of the above