Subtract 3/48m^6n^6- 7/8m^2n^5

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)

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000

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