What is the explicit rule for this geometric sequence? 2/9,2/3,2,6,...

a) an=3(29)^n−1

b) an=3(29)^n

c) an=29⋅3^n−1

d) an=29⋅3n

Can any one me with the answers to these questions asap?

Which graph represents the function g(x) = |x + 4| + 2?

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.