Elena wants to add (2.3 x 10^5) + (3.6 x 10^6) and writes (2.3 x 10^5) + (3.6 x 10^6) = 5.9 x 10^6. Explain to Elena what her mistake was and what the correct solution is.

step-by-step explanation:

this is not a question

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.

at least two

step-by-step explanation:

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this