Help help help, i don't get this

Find the average rate of change for f(x) = x2 − 3x − 10 from x = −5 to x = 10.

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

Ben works in his dads bakery packing bagels each package can have no more then 16 bagels 3/4 of the bagels in each package are plain what other fractions could represent the part of the bagels in each package that will be plain