Please help I need good grade #45

What is the reflection image of (5,-3) across the line y = -x?

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?

Compute the standard deviation of the following set of data to the nearest whole number. 10, 10, 15, 20, 25