Solve by using the substitution method y = -2x
7x - 8y= -23

Acarnival sold tickets for $1.50 for adults and $1.00 for students. there were 54 tickets sold for a total of $70.50. write a system of equations to represent the number of adult tickets,x, and the number of student tickets,y. find the solution and explain what it means. i'll you if you me

He that is measured at 220° is a reflex angle. the opposite angle is obtuse. find the measure of obtuse .

Which of the following is closest to 32.9 x 7.5? a: 232 b: 259 c: 220 d: 265