Solve the following system of equations please ASAP

Given:

The system of equation:

-------- (1)

--------- (2)

To find the values of x and y.

We will use substitution method.

From (1) we get,

We will put the value of y in (1) and we get,

or,

Now we will apply middle term factor method.

so, x = 4 and 1

Now,

Substitute x = 4 in (1) we get,

And putting x = 1 in (1) we get,

Hence, the solution of the given system of equation is (4,-8) and (1,-5)

Thus, Option A is the correct answer.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: