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3 years ago

In 2012, five U.S postal stamps cost $2.20. how much did seven stamps cost?

2 answers:

7 0

First you have to find how much each stamp costs. So u take 2.20 ÷ 5 = 0.44.
Next you take 0.44 x 7 and you should get $3.08

Savatey [412]3 years ago

3 0

First, divide 2.20 by 5 to find the price of a single stamp.
2.20 ÷ 5 = 0.44
One stamp cost $0.44
Now, you multiply this by 7 to find the cost of seven stamps.
0.44 × 7 = 3.08
In 2012, seven stamps cost $3.08

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3 years ago

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Answer:

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2 years ago

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Considering the vertex of the graph, it is found that the quadratic function that is the best model for the data is given by:

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The equation of a quadratic function, of vertex (h,k), is given by:

$y = a(x - h)^2 + k$

In which a is the leading coefficient.

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$y = -200(x - 4)^2 + 800$

More can be learned about quadratic functions at brainly.com/question/24737967

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2 years ago