Based on premilinary reports by geological survey team it is estimated that a newly discovered gold mine 72t? can be expected to produce gold at a rate of R(t) tons of gold per year where t is the number t3 + 30 of years after mining begins. [A] How much gold will be mined in the first 7 years? tons [B] How long will it take to mine 121 tons of gold? years Question Help: D Post to forum Submit Question

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