This shows that Billy will have $12, 168.25 after 12 years
<h3>Compound interest</h3>
The formula for calculating the compound interest is expressed as:
From the information given, the amount is expressed as;

This shows that Billy will have $12, 168.25 after 12 years
Learn more on compound interest here: brainly.com/question/24924853
Step-by-step explanation:
1/2 × (p+9) is the algebraic expression.
Answer:
3y+4
Step-by-step explanation:
9y-6y=3y
Answer:
3.5ft
Step-by-step explanation: