Drag each tile to the table to multiply each row heading by each column heading.
-18d2
36
11d?
2d
-99d
— 4d
2d2
11d
d
--- 9

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: