Can someone help me? Read the other side btw!

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)

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu