Which equation matches the graph shown?
2 answers:
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Answer:
$ 35.96
Step-by-step explanation:
Let x be the cost ( in dollars ) of 4 ounces of the pecans,
So, the ratio of the cost and ounces needed =
Also, the cost of 1 ounces of pecans is $ 8.99,
Thus, the ratio of the cost and ounces needed =
Hence, we can write,
Which is the required proportion,
By cross multiplication,
x = 4 × 8.99 = 35.96
Therefore, $ 35.96 is the cost of 4 ounces of the pecans.
For this case what we should do is find the cost per ounce.
For this, we can use the following rule of three:
5 ounces ----------------------> 2.50 $
1 oz ------------------------> x
From here, we clear the value of x.
We have then:
Answer:
The unit cost per ounce is given by:
x = 0.5 $ / ounce