Answer:
5x+3y
Step-by-step explanation:
2x+3x=5x since they have the same variable.
y+2y
1y+2y u can put a 1 so that would be 3y
y=-16x^2+200x+82
k
7,-5,-11
-3(-4)-5=7
-3(0)-5=-5
-3(2)-5=-11
he gave them 12 extra
12-24 is 12
