Which groundbreaking calculator product launch in the 1970s revolutionized mathematics accessibility and featured the marketing slogan "A calculator experience that doesn't add to the price"?

The handheld calculator transformed mathematics education and professional computation, representing one of the most significant product launches in STEM history. Behind these devices were sophisticated marketing strategies that helped shape how we interact with mathematics today. This trivia question explores a pivotal moment in calculator product history that changed the mathematics landscape forever.

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Texas Instruments TI-30, which introduced scientific functions at a consumer-friendly $24.95 price point (1976)
Hewlett-Packard HP-35, the first scientific pocket calculator with transcendental functions (1972)
Casio fx-7000G, the world's first graphing calculator for the mass market (1975)
Sharp EL-8, which pioneered the use of LCD displays in portable calculators (1973)