exam Maths Puzzle Numerical Ability

State the domain and range of -3f(x)

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exam Other Question

Jason is a salesperson in the electronics department. He is 25% short of his goal for the week. His goal is to earn 448. for each CD player he sells he earns 56.00. how many CD players does he need to sell in order to meet his goal? I am needing to find the x coefficient of this y=9.5x-1250