document.write( "Question 198189: A grocery store sells Columbian coffee for $4 dollars per pound and Jamaican coffee for$12 dollars per pound. How much of each are needed to create a mixture weighing 10 pounds and costing $60?
\n" ); document.write( " a. Write two linear equations in standard form to model this problem
\n" ); document.write( "let x be pounds Columbian; y be pounds Jamaican
\n" ); document.write( " b. change your equation to slope intercept form. use your calculator to graph. Label the intersection of your graph and label each line with its equation in slope intercept form
\n" ); document.write( " c. How many pounds of each coffee is needed?
\n" ); document.write( "

Algebra.Com's Answer #148883 by arallie(162)\"\" \"About 
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A grocery store sells Columbian coffee for $4 dollars per pound and Jamaican coffee for $12 dollars per pound. How much of each are needed to create a mixture weighing 10 pounds and costing $60?
\n" ); document.write( " a. Write two linear equations in standard form to model this problem
\n" ); document.write( "let x be pounds Columbian; y be pounds Jamaican
\n" ); document.write( "\"10=x%2By\"
\n" ); document.write( "\"60=4x%2B12y\"
\n" ); document.write( " b. change your equation to slope intercept form. use your calculator to graph. Label the intersection of your graph and label each line with its equation in slope intercept form
\n" ); document.write( "\"y=10-x\"
\n" ); document.write( "\"y=5-%28x%2F3%29\"
\n" ); document.write( "\"graph%28+300%2C+200%2C+-10%2C+10%2C+-10%2C+10%2C+10-x%2C+5-%28x%2F3%29%29\"
\n" ); document.write( "(7.5, 2.5)
\n" ); document.write( " c. How many pounds of each coffee is needed?
\n" ); document.write( "7.5lbs Columbian
\n" ); document.write( "2.5lbs Jamacian
\n" ); document.write( "
\n" );