document.write( "Question 699487: it cost 100 for the first ten feet each ten feet succeeding are25 how much does it cost to build a 90ft tower this is what I came up with n*25=2500-200=2300+25=2325 \n" ); document.write( "

Algebra.Com's Answer #431390 by sp75(12) $\"\"$ $\"About$

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If I have 9 floors of a building, and I assume each floor is 10 feet tall, then I have a 90 ft tall building( $\"9%2A10+=+90+feet\"$ ). I know that I have to pay 100 dollars no matter what for the first floor/ first 10 feet. That leaves me to pay $25 for any remaining floors. In this case, there are 8 floors remaining.\r
\n" ); document.write( "\n" ); document.write( "My payment is $\"100%2B+%2825%2A8%29\"$ . However, I want an equation for every case.\r
\n" ); document.write( "\n" ); document.write( "Assume the number of floors = N, then for any given number of floors, I will pay $100 for the first floor/the first ten feet. I will then pay for $25 for the remaining floors which is equal to the total number of floors minus the first floor. \r
\n" ); document.write( "\n" ); document.write( "Your equation to find the total cost is:
\n" ); document.write( " $\"100+%2B+%2825%2A%28N-1%29%29\"$ dollars. \r
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