Thank u for the help

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

Asmall business produces and sells balls. the fixed costs are $20 and each ball costs $4.32 to produce. each ball sells for $8.32. write the equations for the total cost, c, and the revenue, r, then use the graphing method to determine how many balls must be sold to break even.

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