$1.$ The Superior Jumpdrive Company sells jump drives for $$10$ each. Manufacturing cost is $$2\mathrm{.}60$ per jump drive; marketing costs are $$2\mathrm{.}40$ per jump drive; and royalty payments are $20\%$ of the selling price. The fixed cost of preparing the jump drive is $$18000.$ Capacity is $15000$ jump drives. c$.$ Draw a detailed break$-$even chart. $(2$ marks$)$ d$.$ Determine the break$-$even point in units if fixed costs are increased by $$1600,$ while manufacturing cost is reduced by $$0\mathrm{.}50$ per jump drive. $(2$ marks$)$ e$.$ Determine the break$-$even point in units if the selling price is increased by $10\%,$ while fixed costs are increased by $$2900.(2$ marks$)$