Will give brainliest answer

A = 25 pi units^2

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

A = pi * 5^2

A = 25 pi units^2

A = 78.5

Step-by-step explanation:

Area of a Circle: A = πr²

We are given r, so plug it in:

A = π(5)²

A = 25π

A = 78.5

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.