Question

Air pressure may be represented as a function of height above the surface of the Earth as shown below.

Answer 1

Answer choices A,B,C,D from top to bottom :)

Answer 2

P(h) is the pressure at some height h

It's given that the pressure at this unknown height is 75% of the pressure at sea level

What is the pressure at sea level?

Answer 3

umm p(.75) ??

Answer 4

p(0.75) means that you're finding the pressure when h = 0.75

Answer 5

so thats not it??

Answer 6

no

Answer 7

it is?

Answer 8

or it isn't?? :/ if so, what do i do next?

Answer 9

it says right in there that the pressure at sea level is P0

Answer 10

ohhh i see now.. kk what do i do now?

Answer 11

do i plug in or something?

Answer 12

75% of this pressure at sea level is what

Answer 13

.75Po ?

Answer 14

yep

Answer 15

so replace P(h) with 0.75P0

Answer 16

because at this unknown height, the pressure is 75% of the sea level pressure

Answer 17

oh i see, so that leaves me with B as my answer right?? because of that and we do process of elimination it right??

Answer 18

yep

Answer 19

awesome! thanks!! :)

Answer 20

awesome! thanks!! :)