In $2015$, there were $3014$ registered cell phone users in a small town. The number of cell phones users is estimated to increase by $42\%$ per year. Estimate the number of cell phone users in $2025.$ (Round off to the nearest integer)

The initial population of an ant colony was approximately $600$. The population grows at a rate of $12\%$ per week. Find the growth factor of the population of ants.

The initial population of an ant colony was approximately $600$. The population grows at a rate of $12\%$ per week.

Find a function to model the population growth of the ants.

The initial population of an ant colony was approximately $600$. The population grows at a rate of $12\%$ per week.

Find the approximate number of ants in the colony after $15$ weeks and after $30$ weeks. (Round off to nearest integer)

The initial population of an ant colony was approximately $600$. The population grows at a rate of $12\%$ per week.

Graph the function. Use the graph to estimate how many weeks the ant population takes to double in size.

A population of $10000$ insects decreases by $9\%$ every year.

Write down a formula and use it to calculate the number of insects left after $3$ years.

A population of $10000$ insects decreases by $9\%$ every year.

Write down a formula and use it to calculate the number of insects left after $10$ years.

A population of $10000$ insects decreases by $9\%$ every year. If the time taken for the insect population to reduce to less than half its percent size is $k$ years, then find the value of $k$ (rounded off and write up to $2$ decimal places).

Sahil's parents invest $\$5000$ in a long-term money fund offering $4\%$ interest compounded annually. If it will takes $x$ years for this amount to double, then find the value of $x$ (correct upto the nearest whole number).