What is the value of x in the equation 0.7 x minus 1.4 equals -3.5

Aschool puts on a play. the play costs $1,200 in expenses. the students charge $4.00 for tickets. there will be one performance of the play in an auditorium that seats 500 people. what is the domain of the function that shows the profit as a function of the number of tickets sold?  

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

State if the two triangles are congruent. if they are, state how you know?