1) A shopkeeper fixed the marked price of his radio to make a Profit of 30%. Allowing Rs 30 as a discount then the profit is Rs 30. Find the cost price 2) The marked price of an article is 20% above the cost price. By what percent the cost price is less than the marked price.

Please describe the process.

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the rocket cannot penetrate the ground, in a contextual sense, therefore the roots of this equation should be the domain of this function. i'll let you find the roots of this quadratic equation (hint: use the quadratic formula:  

1- c

2-a

step-by-step explanation:

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graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)

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