The answer is x = 4 as it satisfies both inequalities :)
Let x represent the number of pounds of $10.75/lb coffee used in the mix.
.. 10.75x +3.25(100 -x) = 5.65*100 . . . . . . total cost of coffee blend
.. x(10.75 -3.25) = 100*(5.65 -3.25) . . . . . .separate x-terms from non-x terms
.. x = 240/7.5 = 32
32 pounds of $10.75/lb coffee should be used
68 pounds of $3.25/lb coffee should be used
Answer:
slope is rise over run
My math teacher says that
The third one is the answer
Are you looking for a rate? If not than I belive the answer is 21cents because if before the sales tax it was $3 and after it is $3.21, then the price increased by 21cents
