Mr.Thompson's account will be worth $9,562.50 after 10 years.
Two or more independent functions (say f(x) and g(x)) can be combined to generate a new function (say g(x)) using any of the following approach.


And many more.
The approach or formula to use depends on the question.
In this case, the combined function is:

The savings function is given as

The allowance function is given as:

The new function that combined his savings and his allowances is calculated as:

Substitute values for s(x) and a(x)

Open bracket

Collect like terms


Read more about functions at:
brainly.com/question/15458447
Circumference is given by

Area is given by

figure out the radius of the circle, then use it to find area
It’s 6 3/25 as a fraction