What is the closed linear form for this sequence given a = -15 and an+ 1 "an - 8?
an-7-81
an--7+8n
an--7-8n
D)
On-15 - 8n

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

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.

Patty made a name tag in the shape of a parallelogram. reilly made a rectangular name tag with the same base and height. explain how the areas of the name tags compare.