document.write( "Question 1139262: 4.
\n" ); document.write( "a. The common difference in an arithmetic sequence is 8 and the sum of the first 14 terms is 966,
\n" ); document.write( "find the first term?
\n" ); document.write( "b. Solve 4x^2 − 9x ≤ 9.
\n" ); document.write( "c. Given that q is the number of ball pumps people are willing to buy per week from a manufacturer
\n" ); document.write( "at a price of 1200 − 60√q + 27 dollars .
\n" ); document.write( "i. Write an expression R, for total revenue.
\n" ); document.write( "ii. Find marginal revenue,dR/dq when q = 12.
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Algebra.Com's Answer #757048 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
(a):\r
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\n" ); document.write( "\n" ); document.write( "\"A%5B1%5D%2B8%28n-1%29\", the general term of the sequence\r
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\n" ); document.write( "\n" ); document.write( "\"%2814%2F2%29%28A%5B1%5D%2BA%5B1%5D%2B8%2814-1%29%29=966\" and question asks for \"A%5B1%5D\".\r
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\n" ); document.write( "\n" ); document.write( "(b):\r
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\n" ); document.write( "\n" ); document.write( "\"4x%5E2-9x-9%3C=0\"
\n" ); document.write( "Find that the solution is between and including the roots.
\n" ); document.write( "ROOTS: \"%289%2B-+sqrt%2881%2B4%2A4%2A9%29%29%2F%282%2A4%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"%289%2B-+sqrt%28225%29%29%2F8\"\r
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\n" ); document.write( "\n" ); document.write( "\"%289%2B-+15%29%2F8\"\r
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\n" ); document.write( "\n" ); document.write( "\"system%28-3%2F4%2Cto%2C3%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"highlight%28-3%2F4%3C=x%3C=3%29\"
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