Find the percent of change to nearest percent: 56 to 80

While scuba diving, rajeev dove to a depth of 12.6 feet below the surface of the water and then descended another 8.7 feet. what expression can be used to find rajeev's new position? 12.6 – 8.7 –12.6 – 8.7 –12.6 – (–8.7) 12.6 – (–8.7)

Identify the number as a rational or irrational.explain. 127

Use the elimination method to solve the systems of equations.choose the correct ordered pair. 7x+4y=39