Diameter = 8 cm circumference =
2 answers:
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Answer:
A box of oat cereal cost lees than a box of rice cereal cost per ounce.
Step-by-step explanation:
Given:
15 oz of oat cereal cost = $3.90
11 oz of rice cereal cost = $3.30
We need to find the which box of cereal cost less per ounce.
Solution.
First we will find cost of 1 oz of oat cereal.
Now we know that;
15 oz of oat cereal cost = $3.90
1 oz of oat cereal cost = cost of 1 oz of oat cereal.
By Using Unitary method we get;
cost of 1 oz of oat cereal =
Now we will find cost of 1 oz of rice cereal.
Now we know that;
11 oz of rice cereal cost = $3.30
1 oz of rice cereal cost = cost of 1 oz of rice cereal.
By Using Unitary method we get;
cost of 1 oz of rice cereal =
Now from above we can see that cost of 1 oz of oat cereal is $0.26 and cost of 1 oz of rice cereal is $0.3.
Hence we say that, A box of oat cereal cost lees than a box of rice cereal cost per ounce.
So the equation of the red graph is already given to us: . I assume you meant the blue graph?
We can use the vertex form: , where
is the vertex. (We can ignore
because
is 1 for this graph.) Remember that the vertex is the maximum or minimum of a parabola and the point that the line of symmetry passes through. For f(x) the vertex is (0,0).
The vertex for is at
on the coordinate plane. (4 left, 2 down)
Plug into the vertex form:
The double negative becomes a positive, and then you're done: