Noah says that 9x - 2x + 4x is equivalent to 3x, because the subtraction sign tells us to subtract everything that comes from after 9x. Elena says that 9x - 2x + 4x is equivalent to 11x, because the subtraction only applies to 2x. Do you agree with either of them? Explain ur reasoning. i

Pierre operates at a greater power level than Marie.

Marie and Pierre do  the same amount of work

Step-by-step explanation:

Mass of crate=60kg

Height of truck bed=1 m

Time=3s

Pierre's work done=

Using formula Work done=mgh

Where m=mass of object

g=Acceleration due to gravity=9.8

Power=

Using the formula

Pierre's power=

Mass of box=2.5Kg

Total number of boxes=24

Total mass of boxes=

Time=2 min=

1 min=60 s

Marie;s work done=

Marie's power=

Pierre operates at a greater power level than Marie.

Marie and Pierre do  the same amount of work