Enter a compound inequality to show the levels that are within each range. then graph the solutions. a typical acoustic guitar has a range of three octaves. when the guitar is tuned to "concert pitch," the range of frequencies for those three octaves is between 82.4 hertz and 659.2 hertz inclusive. the compound inequality that represents the range of frequencies for a guitar tuned to "concert pitch" using the variable f is

The midpoint of the range of frequencies given is:

midpoint =  (82.4 + 659.2) / 2 = 370.8 Hertz

Then the difference from midpoint to the other end is:
370.8 - 83.4 = 288.4 Hertz

Therefore the inequality formula is
|f - 370.8| <= 288.4

walter needs to make at least 5 more cookies but no more than 40. 5 ≥ x ≥ 40;

step-by-step explanation:

walter has to make a minimum of 20 cookies. he already has 15 cookies made, so he must make 5 more to meet the minimum.

the maximum amount of cookies he can make is 55. he already has 15, so he has to make no more than 40 more cookies to meet the maximum.

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.