document.write( "Question 477657: Let M = f(t) be the average number of meals per person purchased at restaurants annually in
\n" ); document.write( " the year that is t years since 1900. An equation of f is f(t) = 2.22t – 71.01.\r
\n" ); document.write( "\n" ); document.write( "a. Find an equation for f^–1.
\n" ); document.write( "b. Find f(125)
\n" ); document.write( "c. Find f^–1 (125)\r
\n" ); document.write( "\n" ); document.write( "Please solve a,b, and c for the question above. \r
\n" ); document.write( "\n" ); document.write( "Please show me step by step to get the answer. Thanks \r
\n" ); document.write( "\n" ); document.write( "I really DO NOT know how to solve this problem. Please HELP ME!! Thanks \n" ); document.write( "
Algebra.Com's Answer #327329 by stanbon(75887)\"\" \"About 
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Let M = f(t) be the average number of meals per person purchased at restaurants annually in
\n" ); document.write( "the year that is t years since 1900.
\n" ); document.write( "An equation of f is f(t) = 2.22t – 71.01.
\n" ); document.write( "y = 2.22t-71.01
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\n" ); document.write( "a. Find an equation for f^–1.
\n" ); document.write( "1st: Interchange t and y to get:
\n" ); document.write( "t = 2.22y-71.01
\n" ); document.write( "2nd: Solve for \"y\":
\n" ); document.write( "f^-1(t) = (t+71.01)/2.22
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\n" ); document.write( "\n" ); document.write( "b. Find f(125) = 2.22*125 - 71.01 = 206.49
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\n" ); document.write( "\n" ); document.write( "c. Find f^–1 (125) = (125+71.01)/2.22 = 88.2928
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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