QUESTION 1 Calculate 2.56 x3.2 and write your answer: 1.23 + 2.8 13 n (1) correct to 3 decimal places, correct to 2 significant figures. [1 b) Calculate the exact value of (14 -3 -21x1 14 c) Simplify [(20-2)+12+4]x3-7 using the order of operations. 14 d) Given that m = 4 and n = -3, calculate (5m + m)(2n-3). 13 QUESTION 2 Given that A = V46 - c, make b the subject of the formula. 13 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. (ii) Calculate the value of x. (iii) How many visitors went on the 'Lightning Bolt' slide? 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? QUESTION 3 a) Given that f (x) = 5x + 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