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sarahlikewoe
8. Forrest Lumber uses the function S(t) = -135t + 945 to determine the salvage value S(t), in dollars, of a table saw t years after its purchase. How long will it take the saw to depreciate completely? 7 years 5 years 8 years 9 years
-135t + 945 = 0 what is t now ?
add 135t to both sides and get 945 = 135t divide both sides by 135 and get 7 = t