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Find the derivative of f(x)=xf(x) = x at x=−12x = -12.\newlineWrite your answer as an integer or a fractions" target="_blank" class="backlink">fraction. Simplify any fractions.\newline____\newline

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Q. Find the derivative of f(x)=xf(x) = x at x=−12x = -12.\newlineWrite your answer as an integer or a fraction. Simplify any fractions.\newline____\newline
  1. Identify Total Tape: Identify the total amount of tape needed and the amount per roll.\newlineTotal tape needed = 8,000 cm8,000\,\text{cm}, Tape per roll = 2,000 cm2,000\,\text{cm}.\newlineWe need to divide the total tape needed by the amount per roll to find the number of rolls.\newlineCalculation: 8,000 cm÷2,000 cm8,000\,\text{cm} \div 2,000\,\text{cm}.
  2. Calculate Number of Rolls: Perform the division to determine the number of rolls. 8,000÷2,000=48,000 \div 2,000 = 4. So, the electrician needs 44 rolls of tape.

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