The owner of a hobby store bought a case of 9-volts batteries for $46.30. He marked the price up such that his profit was $3.35 per battery. Once he had sold 12 batteries the store owner had recovered his cost. How many 9-volts batteries are in the case?

answer:   y=2x-3

step-by-step explanation:

well what did you do it matters what you did : )

step-by-step explanation:

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: