I have no clue what they want here please help me

Step-by-step explanation:

first you want to graph f(x) (use a graphing calculator to see if you don't know how to)

you can see that the minimum of f(x) is -4 when x=-8

the minimum of g(x) is 1 when x=3

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

on a coordinate grid, point a is at (−4.0, −2.4) and point b is at (4.0, −2.4). point b is a reflection of point a across the –axis. input either a lowercase x or i think is the right awnser

step-by-step explanation: