Determine if the sequence below is arithmetic or geometric and determine the common difference / ratio in simplest form. 3,15,75,...

This is sequence and the arithmetic or the common difference / ratio in simplest form. geometric is equal to
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Can someone me out here number 4 plz

Jessica is organizing a guided tour of the rain forest. the average profit per person that the touring company makes is given by the rational expression 18x+35/x, where x is the number of people going on the tour. what does the numerator of this rational expression represents?

Determine whether the statement is true or false