Sequoia has a balance of $3155 in her bank checking account, and she spends $5 each day for lunch. Her brother Antwon has $5135 in his bank checking account, and he spend $10 each day for lunch. In how many days will Antwon account balance be less than Sequoia’s.

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: