Quick Fix Inc. repairs bikes. Their revenue, in dollars, can be modeled by the equation y = 400 + 220x, where x is the number of hours spent repairing bikes. Their overhead cost, in dollars, can be modeled by the equation y=20x²+160, where x is the number of hours spent repairing bikes. After how many hours does the company break even?

Note: The phrase break even refers to the value where the two functions are equivalent.

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Which of the following is true of the strategy of planned and unplanned change in global marketing? a) cultural congruence involves deliberately changing certain aspects of culture to meet marketing goals.b) all marketing efforts require planned or unplanned change in order to be accepted.c) planned change involves marketing products similar to the ones already on the market.d) the first step in bringing about planned change in a society is to remove obstacles for acceptance of a product.e) social planners gained the acceptance of protein-rich diets among the peoples of underdeveloped societies using the strategy of planned change.