Which matrix can be used to show the number of packages in the different weight classes during that hour

What is the solution to the inequality

Afunction is given: f(x)=3x+12 a. determine the inverse of this function and name it g(x) b. use composite functions to show that these functions are inverses. c. f(g(– explain: what is the domain?

What are the measures of ∠a, ∠b, ∠c and ∠d? explain how to find each of the angles. measure need asap