At 4:00 P.M. a car's speedometer reads 25 $\mathrm{mi} / \mathrm{h}^{2}$ . At 4:15 it reads 72 $\mathrm{mi} / \mathrm{h}^{2}$ . At some time between 4:00 and 4:15 the acceleration is exactly x $\mathrm{mi} / \mathrm{h}^{2}$ . Find x.

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The Answer of At 4:00 P.M. a car's speedometer reads 25 $\mathrm{mi} / \mathrm{h}^{2}$ . At 4:15 it reads 72 $\mathrm{mi} / \mathrm{h}^{2}$ . At some time between 4:00 and 4:15 the acceleration is exactly x $\mathrm{mi} / \mathrm{h}^{2}$ . Find x.

At 4:00 PM mi/h2\mathrm{mi} / \mathrm{h}^{2}mi/h2 at 4:15 It Reads 72

At 4:00 PM $\mathrm{mi} / \mathrm{h}^{2}$ at 4:15 It Reads 72