Dylan needs to buy new contact lenses. His ophthalmologist sells 8-lens boxes in packs of 2 for $52 & 10-lens boxes in packs of 4 for $120. Which option is a better buy?

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:

no

step-by-step explanation:

b.

step-by-step explanation:

i just know