Apack of erasers sells for $5.00.what is the sales tax rate if the total cost of the earsers is $5.30

5.30 - 5.00 = 0.30

0.30 / 5.00 = 0.06 = 6% sales tax rate

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: