Answer:
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Step-by-step explanation:
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1- The interest rate is 7.5/year so 7.5/.75 year(9 months) at 500$ which would produce a profit of 28.13$ so a total of 528.13
2-7.5/year for 1.5 years(18 months) at 500$ so total interest is 56.25$ so the total is 566.25$
4.8
To find the answer, cross multiply 2/25 with x/60
2 times 60 is 120, so put 120 over 25 and divide for your answer.
You would factor 8x - 4 as 4 ( 2x - 1)