Solve for r. Please show work for me.
12=sqrt(160+r)
Solve for r: 12 = sqrt(r+160)
12 = sqrt(r+160) is equivalent to sqrt(r+160) = 12: sqrt(r+160) = 12
Raise both sides to the power of two: r+160 = 144
Subtract 160 from both sides: Answer: |r = -16
