Can someone show me how to do this problem

√x+5 -1 = 0

Solve for X:

Add 1 to each side:

√x+5 = 1

Remove the radical by squaring both sides:

(√x+5)^2 = 1^2

Simplify:

x+5 = 1

Subtract 4 from each side:

x = -4

The answer is C.

1) c 2143.6 cm

2) c 113.0 m

3) a 33.5 ft

4)   d 2 cm

5) c 20 mm

6) 180 in

7) d 120 ft