Question 56274: A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities. THANK YOU IN ADVANCE
Answer by Edwin McCravy(20055) (Show Source):
You can put this solution on YOUR website! A home-based company produces both hand-knitted scarves and sweaters.
The scarves take 2 hours of labor to produce, and the sweaters take 14 hours.
The labor available is limited to 40 hours per week, and the total production
capacity is 5 items per week. Write a system of inequalities representing
this situation, where x is the number of scarves and y is the number of
sweaters. Then graph the system of inequalities. THANK YOU IN ADVANCE
Each scarf takes 2 hours of labor. Therefore x scarves takes 2x hours of
labor. Each sweater takes 14 hours of labor. Therefore x sweaters takes 14y
hours of labor
Therefore the total number of hours of labor is 2x + 14y.
Since the number of hours of labor must be less than or equal to 40, we
have the inequality:
2x + 14y < 40
Since they are limited to x items per week,
x + y < 5
Now there are two additional inequalities, the obvious ones, which
indicate that the number of each item cannot be negative. These are
x > 0
y > 0
These last two limit the graph to the upper right hand region of
the xy-plane. So we draw the graphs of the lines we get by
replacing the inequalities by equal signs.
2x + 14y = 40
x + y = 5
x = 0 (the y axis)
y = 0 (the x axis)
Shade the region which is below both the red and the green
lines, which is above the x-axis and to the right of the
y-axis. This is the feasible region.
Edwin McCravy
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