A grocery store sells an 18 ounce container of peanut butter for $3.28. What is the cost per ounce (unit price)?
2 answers:
Answer: The cost per ounce of the peanut butter is $0.182.
Step-by-step explanation: Given that a grocery store sells an 18 ounce container of peanut butter for $3.28.
We are to find the cost per ounce of peanut butter.
We will be using the UNITARY method to solve the problem.
Cost of 18 ounces of peanut butter = $3.28.
So, the cost of 1 ounce of peanut butter is given by
Thus, the cost per ounce of the peanut butter is $0.182.
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For this case we have the following inequality: y < 3x + 1 < br/ >
What we must do is to evaluate a point of the Cartesian plane and verify if it is in the shaded region.
The shaded region represents the solution of the system of equations.
For the point (0, 0) we have:
0 < 3(0) + 1 < br / >
0 < 0 + 1 < br / >
0 < 1 < br / >
Therefore, the point (0, 0) is in the shaded region because it satisfies the inequality.
Then, the points that are on the line, are not part of the solution because the sign is of less strict.
Hope I helped ~~Laurel
