-3x - 5 = 10 so im a stuck on these kind of questions and i really dont get them and my block exam is coming up

In the football stadium, there are 18 empty seats out of 360 total seats. (1a) write the ratio of empty seats to total seats as a fraction in simplest form. (1b) then explain its meaning.

X+y=-4 x-y=2 use elimination with adding and subtraction

Me! i will mark you brainliest if you are right and show your i don't get polynomials and all the other stuff. multiply and simplify.2x(^2)y(^3)z(^2) · 4xy(^4)x(^2)show your