QUESTION 1 Calculate 2.56x3.2 and write your answer: 1.23 + 2.8 [3 ma (i) correct to 3 decimal places, (11) correct to 2 significant figures. [1 m Calculate the exact value of (14 - 3+21x1. [4 ma b) C) Simplify [(20-2)+12+4]x3-7 using the order of operations. 14 m d) Given that m = 4 and n = -3, calculate (5m + m) (2n-3). 13 m QUESTION 2 Given that A = v46 - c, make b the subject of the formula. 13 m b) A water park has 300 visitors on a certain day. Of that, 70 went on the 'Jamaica Bobsled' slide only, 2x went on the 'Lightning Bolt' slide only, 80 went on neither slide and x went on both slides. (i) Draw a Venn diagram to illustrate the information. [4 (ii) Calculate the value of x. (iii) How many visitors went on the 'Lightning Bolt' slide? 12 D c) The marked price of a scientific calculator is $2,000. If a discount of 15% is given and a tax rate of 15 % is applied on the price after discount, what is the selling price of the calculator? 13 QUESTION 3 a ) Given that f (x) = Sx +3 Calculate: 8x -4 (i) the value of f(-2), (ii) the value of x for which f(x) is undefined. b) Solve for x in the equation 15-4x = 2(3x + 1). c) Factorize completely 2m' +9m -5. d) Solve the following pair of simultaneous equations: 2x + 3y = 18 x + 5y = 23