An iguana is about 42 cm. at birth and increase in length at an approximate rate 12% per week. White the function which models the growth. Use X for the number of weeks and Y for the length of the iguana

Given:
An iguana is about 42cm.
Increase in length at an approximate rate 12% per week.
Let y be the length of the iguana.
Let x be the number of weeks.
[tex]\begin{gathered} y=42(1+\frac{12}{100})^x \\ y=42(1.12)^x \end{gathered}[/tex]