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21 January, 01:17

This is an Algebra Two Honors question:

A jeweler has 12 grams of an 80% gold alloy that she wants to strengthen to 92.5%. Write the rational function, P (x), which is the percent of gold in the alloy by mass where x is the number of grams of gold added.

A) Write the rational function P (x). Use these three expressions to write your rational expression: (12+x), 100x, and 12 (80).

B) Graph the function for the domain 0

C) Use your function an find out how much gold the jeweler must add to create a 92.5% alloy.

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Answers (1)
  1. 21 January, 01:58
    0
    I'm back so

    80% of 12=9.6 grams=gold so

    so she wants to add to the alloy to make the gold 92.5% gold so

    I'm not sure how to do A or B but I think the answer to B is 2.4 grams

    C. so the jewler has 2.4 grams of alloy

    we must find out when 2.4=7.5%, what is 100%

    so if 2.4=.075x then 24=0.75x then 32 grams=100 %

    so 32-2.4=29.6 grams

    29.6/32=0.925 or 92.5%

    this is not the legit way to do it
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