Pls help What is the difference between part-to-part ratios and part-to-total ratios? Describe and then give an example of each.

part-to-part ratios are

An example of part-to-part ratios is

Part-to-total ratios are

An example of part-to-total ratios is

A difference between them is

Which function families have maximums and minimums? 1.)linear absolute value functions and exponential functions 2.) linear absolute value functions and quadratic functions 3.) linear absolute value functions and linear functions 4.) linear absolute value functions and constant functions

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year

What is the point of inflection for the function f(x)=2cos4x on the interval (0, pi/2)