Answer:
<h3 /><h3><em>Interest:</em></h3>
<em>Interest is the cost of borrowing money, and the money you earn from your savings.</em>
<h3 /><h3><em>Interest rate</em></h3>
<em>Interest rates indicate this cost or return as a percentage of the amount you are borrowing or lending (since you are “lending” your savings to the </em><em>bank)</em>
<h3><em>❤</em><em>◍</em><em> </em><em>jess </em><em>bregoli</em><em> </em><em>◍❤</em></h3>
#<em>k</em><em>e</em><em>e</em><em>p</em><em> </em><em>learning</em><em>!</em><em>!</em>
672 is the answer to this question
For this case we have:
Be a function of the form 
Where:

If we want to find f (-2), we substitute
, then:

Since we have a negative root, the result will be given by complex numbers. By definition:

So:

Answer:

Elga's age = x
Alvin's age = x + 7
x + x + 7 = 97.
Simplify the left side of the equation
2x + 7 = 97.
Subtract 7 from each side
2x = 90.
Divide each side by 2
x = 45
Since x is equal to Elga's age, Elga is 45 years old