Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges for each box of seeds. The equation p equals negative 0.5 x squared plus 36 x minus 134 models the profit of the fundraiser. What's the smallest amount, in dollars, that you can charge and make a profit of at least $388?.

Question

Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges for each box of seeds. The equation p equals negative 0.5 x squared plus 36 x minus 134 models the profit of the fundraiser.​ What's the smallest​ amount, in​ dollars, that you can charge and make a profit of at least ​$388​?.

oobleck · Accepted Answer

gee, why all those words? p(x) = -0.5x^2 + 36x - 134 So, just solve -0.5x^2 + 36x - 134 = 388 As with all quadratics, there are two solutions. Pick the one you need. Be sure to round up.