Mike repairs televisions. his revenue, in dollars, can be modeled by the equation y = 25 + 30x, where x is the number of hours spent repairing televisions. his overhead cost, in dollars, can be modeled by the equation y=5x^2−10 , where x is the number of hours spent repairing televisions.

after how many hours does he break even?

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

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