1.Use substitution to solve the system of equations.
X+y= 10
2x +3y = -4

I need this soon and if you could I need help with a lot more of these

Sorry if it’s to much but if you answer could you also show all the work you did for it.

Which of the following is the result of expanding

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

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?