What factors does a meteorologist using the trends method consider?

The factors considered by a meteorologist using the trends method are:
the speed and direction of the fronts, rain clouds and high and low-pressure zones are determined by mathematical calculations. A meteorologist can forecast or predict where he expects the weather pattern to move to in the future. For example, if a storm is 1000 miles away moving at 250 miles per day, then you can expect it to arrive at a certain destination in 4 days time. The challenge with the trends method is that it does not take into account changes in direction and speed of the weather pattern. It assumes that the speed and direction of the weather pattern will stay the same. 

the catch is that the top numbers are atomic masses the bottom numbers are the numbers of protons and electrons in an uncharged atom. they are the number of that atoms as you would find them on the periodic table. further, the numbers on the left are used to determine the missing numbers on the right

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

Ithink 2 is the correct