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The equation shows how the cost of buying pencils is related to the number of pencils purchased. c=0.5p+2c= 0.5p+2. The variable pp represents the number of pencils, and the variable cc represents the total cost. How much does it cost to buy 1010 pencils?

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Q. The equation shows how the cost of buying pencils is related to the number of pencils purchased. c=0.5p+2c= 0.5p+2. The variable pp represents the number of pencils, and the variable cc represents the total cost. How much does it cost to buy 1010 pencils?
  1. Identify variable for pencils: Identify the variable that 1010 pencils correspond to. pp represents the number of pencils, so p=10p = 10.
  2. Substitute pp in equation: Substitute pp with 1010 in the equation c=0.5p+2c = 0.5p + 2. c=0.5×10+2c = 0.5 \times 10 + 2.
  3. Perform calculation: Perform the calculation: c=0.5×10+2=5+2=7c = 0.5 \times 10 + 2 = 5 + 2 = 7.

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