I've been stuck on this question for two weeks, : ,)
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what causes a disturbance that results in a wave?
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i've written about 30 different answers, and they're all : ( it's only one (mabe two) word(s) and refers to waves in general, not just waves in water. like, for instance, electromagnetic waves, or sound waves.

For the below questions, consider a consumer that consumes two goods, x and z with the following utility function. u with bar on top space equals space x to the power of 1 third end exponent z to the power of 2 over 3 end exponent suppose initial values for income and the prices of goods x and z are y equals 90, p subscript x equals space 10, and p subscript z equals 15 respectively, then the price of good x falls to syntax error from line 1 column 89 to line 1 column 100. unexpected '\'.. what is the magnitude of the total effect