Part a: explain why the x-coordinates of the points where the graphs of the equations y = 4–x and y = 2x + 3 intersect are the solutions of the equation 4^–x = 2^x + 3. (4 points)

part b: make tables to find the solution to 4^–x = 2^x + 3. take the integer values of x between −3 and 3. (4 points)

part c: how can you solve the equation 4^–x = 2^x + 3 graphically? (2 points)

What is the equation of the graph below? y=sec(x)-4

Solve this riddle: i am an odd number. i an less than 100. the some of my digit is 12. i am a multiple of 15. what number am i?

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.