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high schoolmathematics 5 points

chisaka has less than 145kg of food remaining in her spaceship. she needs a constant amount of food each day that she spacewalks, and a constant amount of food each day that she doesn't spacewalk. let s represents the number of days chisaka spacewalks and n represents the number of days she doesn't spacewalk without running out of food. 2.2s+1.3n < 145 according to the inequality, how much food does chisaka need for each day that she does and doesn't spacewalk

Adecibel is a logarithmic unit that can be used to measure the intensity of a sound. the function y = 10logx gives the intensity of a sound in decibels, where x is the ratio of the intensity of the sound to a reference intensity. the reference intensity is generally set at the threshold of hearing. use the graphing utility to graph the decibel function.a whisper has a sound intensity of 30 decibels. use your graph to you complete the following statement. the sound intensity of a whisper is times the reference intensity.