Answer:
Neither; see below
Step-by-step explanation:
Your acceleration: 
Your friend's acceleration: 
Therefore, since both you and your friend accelerate at the same rate, neither is faster.
Symmetrical because the numbers in a bar graph show sort of a pyramid-like shape, rather than a skewed or flatter shape.
Answer:if it’s a pretest just guess you don’t need to get it right
Step-by-step explanation:
X = low-energy lamp
y = high-energy lamp
1) 4x + 5y
2) 120= 4x + 5y