Question
Asked Feb 20, 2020
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Suppose that income is a function of age. The following function represents the relation between average annual income I and age a.
 
I(a)=-54a^2 +5,119a -54,421
 
​(a) For what age does average income I equal $40,000?
​(b) For what age does average income I equal $50,000?
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Expert Answer

(a) Given:

Algebra homework question answer, step 1, image 1

Find for what age does average income I equal $40,000.

Algebra homework question answer, step 2, image 1

(b) Find for what age does average income I equal $50,000.

Algebra homework question answer, step 3, image 1

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