It seems these days that college graduates who are employed full-time work more than -hour weeks. Data are available that can help us decide if this is true. A survey was recently sent to a group of adults selected at random. There were respondents who were college graduates employed full-time. The mean number of hours worked per week by these respondents was hours, with a standard deviation of hours. Assume that the population of hours worked per week by college graduates employed full-time is normally distributed with mean. Can we conclude that is greater than hours?

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:

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)

answer: (3,11) is your answer.