5 3 2 10 2 3 4 -1 8. Determine which expression is the correct rationalization of the numerator of 3/x+9 -9 3x a. C. X VX+9+3 xx+9+3 b. d. X - 9+3 XX-9+3 9. Determine an expression, in simplified form, for the slope of the secant PQ with A(1, 2) and Q(1 + h, f(1+ h)) where f(x) = 2x3. a. 4+ 2/2 C. 8-4h b. 4-2h d. 8+4h 10. Determine lim VX+36-6 [3 marks] *+0 X