Models can be in scientific investigations because
a.
they can be safer to work with than the real thing.
b.
they can be smaller and more manageable than the real thing.
c.
it may not be possible to work with the real thing.
d.
all of the above

The boiling point of water at an elevation of 0 feet is 212 degrees fahrenheit (°f). for every 1,000 feet of increase in elevation, the boiling point of water decreases by about 2°f. which of the following represents this relationship if b is the boiling point of water at an elevation of e thousand feet? a) e = 2b - 212 b) b = 2e - 212 c) e = -2b + 212 d) b = -2e + 212