Which calculator company's marketing campaign featured the tagline 'She's got the power' and sponsored math competitions worldwide to promote STEM education among girls?

The intersection of mathematics and product marketing has created some innovative campaigns over the years. Mathematical concepts have been used to create memorable brand identities, advertising strategies, and even product taglines. This poll tests your knowledge of a famous mathematical product endorsement that changed how a company was perceived in the academic world.

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Texas Instruments with their TI-84 Pink Edition
Casio with their fx-CG50 Series
HP with their Prime G2 Calculator
Sharp with their EL-W516 WriteView Series