Help!! 15 points and mark as brianliest

Answer:
150
Explanation:
add 30 to each number, so 120 + 30= 150. Hope that this helps you and have a great day :)
Answer:
C. 150 lb
Explanation:
The slope is going at y=3x+0. If we use this formula we can find out y.
y=(3*50)+0
y=150+0
y=150
50 bricks will weigh 150 pounds.