document.write( "Question 742391: 1. Suppose an investment doubles in value every 5 years. This year the investment is worth $3,120. How much will it be worth 10
\n" ); document.write( "years from now?
\n" ); document.write( "a. $49, 920
\n" ); document.write( "b. $12,480
\n" ); document.write( "c. $24,960
\n" ); document.write( "d. $62,400\r
\n" ); document.write( "\n" ); document.write( "2. One calling card has a $0.50 connection fee and charges $0.02 per minute. Another card has a $0.25 connection fee and
\n" ); document.write( "charges $0.03 per minute. After how many minutes would a call cost the same amount using either card?\r
\n" ); document.write( "\n" ); document.write( "a. 50 minutes
\n" ); document.write( "b. 15 minutes
\n" ); document.write( "c. 25 minutes
\n" ); document.write( "d. 2.5 minutes\r
\n" ); document.write( "\n" ); document.write( "3. Mandy has $2.40 in coins, all in dimes and nickels. The total number of coins is 30. If she has d dimes and n nickels, which
\n" ); document.write( "system models the situation?\r
\n" ); document.write( "\n" ); document.write( "a. d + n = 30
\n" ); document.write( " 10d + 5n =240
\n" ); document.write( "b. d + n = 30
\n" ); document.write( " 10d + 5n = 2.40
\n" ); document.write( "c. 10d + 5n = 30
\n" ); document.write( " d + n = 2.40
\n" ); document.write( "d. 10d + 5n = 30 \n" ); document.write( "

Algebra.Com's Answer #452428 by mananth(16946) $\"\"$ $\"About$

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1b\r
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