what is -5 * (3 - 10)² - 3²? Every app I use gives me a different answer; please explain, and use PEMDAS.

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

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11