2x-3=-(4x+9) epic bruh moment, i cant seem to get this right someone answer it for me.

On an airplane there are two seats on the left side and three seats on the right side there are 90 seats o the right side of the plane

David bought a poster for an art project. the poster is 2.7 feet wide and 3.9 feet tall. what is the area of the poster?

Aregular hexagon rotates counterclockwise about its center. it turns through angles greater than 0° and less than or equal to 360°. at how many different angles will the hexagon map onto itself?