29. A temperature expressed using Kelvin (K) units can be converted to degrees Celsius (C) by subtracting 273 Convert the boiling points of the gases given in the table from Kelvin to degrees Celsius.
Gas
Boiling Point
Aszon
87K
Helium
4K
Krypton 120 K
Neon
27 K

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol

the image is given below

since the options are not given so we draw it from the equation

the given equation is

y = (x-1) (x+4)

y = y² + 3x - 4

the above equation is a quadratic equation which will have two roots. if we draw the graph for it, it will look like this

time is equal to distance over rate so

t = d/r

need a little bit more information for the second question.