document.write( "Question 296000: suppose it costs $8 to dig a hole 1 foot deep, $6.40 for the second foot, $5.12 for the third foot, and so forth. How much would it cost to dig a 5-foot deep hole? \n" ); document.write( "
Algebra.Com's Answer #213352 by richwmiller(17219)    You can put this solution on YOUR website! 8+6.40+5.12+ 4.096+3.2678=26.8928 \n" ); document.write( "c(h)=(.8)^4*8+(.8)^3*8+(.8)^2*8+(.8)^1*8+(.8)^0*8\r \n" ); document.write( "\n" ); document.write( "c(h)=8*(.8^4+.8^3+.8^3+.8^2+.*1+.8^0) \n" ); document.write( "8*3.3616=26.8928=$26.90 round up \n" ); document.write( "  |