exam Maths Puzzle Numerical Ability

If the inventor in exercise 53 charges $4 per unit, then her
profit for producing and selling x units is given by the function

P(x)= 2.25x - 7000
(a) What is her profit if she

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exam Other Question

Bob invested $20,000, part at 14% and part at 13%. If the total interest at the end of the year is $2,720, how much did he invest at 14%? A baseball dimond is a square whose side measure 90ft.For a home run a player must run around the squre. If a player hits 35 home runs, what is the least number of feet he or she must run.