2-X 1. (a) Simplify - z + *-2 (x-3)(x-2) (b) Find the value x for which the expression is undefined. 21-23 (c) 3x2 - 11x + 6 = 0. 2. (a) Factorisers + tr - pt - ps. (b) Rationalize zaves (c) Make 'd' the subject of the formula D2. d2 W=M Also, find d when D = 3.6, M = 3, and dz Answer correct to 3 significant figures

The graph below shows the line of best fit for data collected on the number of cell phones and cell phone cases sold at a local electronics store on twelve different days. number of cell phone cases sold 50 * 0 5 10 15 20 25 30 35 40 45 number of cell phones sold which of the following is the equation for the line of best fit? a. y = 0.8x b. y = 0.2x c. y=0.5x d. y = 0.25x