Please please PLEASE help, and if you could show work too that would be so amazing

6.(q^9)^2 a. 2q^18 b. q^18 c. q^81 d. q^11 7.(6q^6)^-4 a. 6q^1296 b. 1296q^2 c. 1/1296q^24 d. 6q^-24 8. what is the value of 12x^-3 y^-1 for x = -1 and y = 5? a. -12/5 b.-10 c.-0 d.5/12

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

    choose the correct definition for  extremo.  a.  end      b.  extra      c.  extract      d.  eventual