all questions and parts

3 of 3 Thinking Task ( 8 marks) 5. Find an expression for >' = (k) if 3x - y-2=0, 31-x+2 =0, and 3k -1 -2 =0 (3 marks) 6. A circle has radius, r, and circumference C. Suppose the area of the circle is given by A, determine an equation for A(r(C)) (2 marks) 7. Let S(x) = 3x +5 and "(x) = 3x' +3x +2 (a) Find a function, g, such that / g =" . Show algebraically that (fg)(x) = (x) (2 marks) (b) Determine the value of 8((-1)) . (1 mark)