Use your knowledge of expressions to answer the following question.
Kevin has 300 coins in his cookie jar. He has twice as many quarters as
he does dimes and three times as many nickels as he does dimes. How
much money does he have all together?
Type your answer below and remember to explain your answer. ll

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Step-by-step explanation:

please be

answer: 193

explanation:

200-7 = 193

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,