Answer:
The amount of cents in the bank is:
[tex]7x^2 +6x +3[/tex]
Step-by-step explanation:
To answer this question you must divide the polynomial of degree 3 between the polynomial of degree 1.
That is, we must perform the following operation:
[tex]\frac{21x^3 + 18x^2 + 9x}{3x}[/tex]
To make this division we must divide each term of the main polynomial by 3x.
[tex]\frac{21x^3}{3x} = 7x^2[/tex]
[tex]\frac{18x^2}{3x} = 6x[/tex]
[tex]\frac{9x}{3x} = 3[/tex]
Finally, the result is:
[tex]7x^2 +6x +3[/tex]
