QJ Suppose ulat 5 - d'T DY. (Where a is the Intercept, D Is the slope, I meanis Income and S means savings). 8 marks (i) What is the income if intercept = 20, savings = 4500 & slope = 0.8? (ii) What is the savings if Y = 2500, a = 150 and b = 0.45? (iii) What is the slope when Y= 2400, S = 400 and a = 80? (iv) The profit function of an industry is given as Profits = 3200 + 18% of the sales value. 3400 units are sold by the industry at the price $8 per unit. Compute the profits of the industry