Based on the following system of equations, determine the number of solutions. 3x + 2y = 20 y + 9 = 8x select one: a. no solutions b. one solution c. two solutions d. infinitely many solutions

How do you use the elimination method for this question? explain, because i really want to understand!

Solve: 25 points find the fifth term of an increasing geometric progression if the first term is equal to 7−3 √5 and each term (starting with the second) is equal to the difference of the term following it and the term preceding it.

The graph shows the decibel measure for sounds depending on how many times as intense they are as the threshold of sound. noise in a quiet room is 500 times as intense as the threshold of sound. what is the decibel measurement for the quiet room? 20 decibels28 decibels200 decibels280 decibels