Write a numerical expressional for the difference of sixteen and nine

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)

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Find the distance between (0,5) & (-4,2)