Determine the function at f q if 2 1 1 5 f x qx x q 3

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Determine the function at ( ) f q if 2 1 1 ( ) 5 f x qx x q [3] 2.2 Ndeyapo has a budget of N\$6500 to spend on two utilities (U 1 , U 2 ) whose respective unit prices are N\$250 and N\$130 respectively. 2.2.1 Formulate an Isocost function that describes the different combinations of the two different utilities. [3] 2.2.2 Draw an Isocost line (? 1 ) , with U 1 on the horizontal axis, to show all the different combinations of the two utilities that can be bought within Ndeyapo’s budget. [4] 2.2.3 What happens to the original isocost line if the budget falls by 30%? [1] 2.2.4 On the same graph, draw the isocost line (? 2 ) with this new budget (state new isocost function). Comment on your observation about the slope and vertical intercept. [4] 2.2.5 What happens to the original budget line if the price of utility U 1 tripled and the price of U 2 decreased by a fifth of the price? Graph this new budget line (? 3 ) on the same graph. Comment on your observations. [4] 2.3 The Income Determination model for a 4-sector economy, 𝑌 = 𝐶 + 𝐼 + 𝐺 + ? , in equilibrium has the following functions: 0 1 0 0 0 ( ) C C C Y T consumption I I br investment G G government spending T T taxes