What are the roots of this quartaic equation? -10^2 + 12x - 9 = 0

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Which equation represents the function on the graph?

Acomputer store bought a program at a cost of $10 and sold it for $13. find the percent markup

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.