What is the average rate of change for this exponential function for the interval from x = 2 to x = 4?

The verbal translation for the difference of m and 7 increased by 15

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

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?