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Generalize Four of the five employees at Company B each received
a raise of $40. After the raises, how much greater is the mean of
the salaries for Company B than for Company A? Explain how you
solved the problem.

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:

whew you’re speaking a different language