If f(x) = 2x - 4, then prove that, (f-1of)(x) is an identify function. it's a optional mathematics Questions please solve him​

Which of the following would be a good name for the function that takes the weight of a box and returns the energy needed to lift it?

What are the solutions to the following equation? |m| = 8.5 the value of m is equal to 8.5 and because each distance from zero is 8.5.

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !