document.write( "Question 591344: Between 1980 and 1990, a monthly rent for a one bedroom apartment increased by $20 per year. In 1987, the rent was $350 per month. Find an equation that gives the monthly rent in dollars, y, in terms of the year, t. Let t = 0, correspond to 1980. \n" ); document.write( "
Algebra.Com's Answer #375616 by ankor@dixie-net.com(22740)\"\" \"About 
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Between 1980 and 1990, a monthly rent for a one bedroom apartment increased by $20 per year.
\n" ); document.write( " In 1987, the rent was $350 per month.
\n" ); document.write( " Find an equation that gives the monthly rent in dollars, y, in terms of the year, t. Let t = 0, correspond to 1980.
\n" ); document.write( ":
\n" ); document.write( "From the information given we can find the slope easily using \"rise/run\"
\n" ); document.write( "a $20 rise for each year, therefore m=20
\n" ); document.write( ":
\n" ); document.write( "let b = rent in 1980 (t=0)
\n" ); document.write( "y = 20t + b
\n" ); document.write( "In 1987 t=7, y=350, find b
\n" ); document.write( "20(7) + b = 350
\n" ); document.write( "140 + b = 350
\n" ); document.write( "b = 350 -140
\n" ); document.write( "b = 210
\n" ); document.write( "therefore the equation
\n" ); document.write( "y = 20t + 210 \n" ); document.write( "
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