In a coin collection, the number of nickels is 8 more than twice the number of quarters. if the collection has 42 nickels, how many quarters are in the collection?

Step-by-step explanation:

Given

The attached function (graph)

Required

Find a

The given function is quadratic and will be solved using:

From the attachment:

Substitute these values in

For:

For:

For:

So, we have:

--- (1)

---- (2)

--- (3)

Make c the subject in (1)

Substitute in (2) and (3)

Collect Like Terms

--- (4)

Collect Like Terms

--- (5)

Add 4 and 5

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Divide through by 2