Consider the function f(x)=−23x+5 . what is f(12) ? enter your answer, as a simplified fraction, in the line. f(1/2)=

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Write the function for the graph. (1.8) (0,4)

Math i have no idea how to do a and b