Determine the number of solutions for this system of equations by inspection only. Explain. 2x + 3y = 12
10x + 15y = 111

Which expression gives you the distance between the points (5,1)and(9,-6)

What is the difference between the equations of a vertical and a horizontal line?

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?