D 7
A million apologies if I’m wrong half of my brain is still on vacation!
It would be thirty six seconds over one-fourth mile= 144 miles per hour
Answer:
x=7.5
y=1.5
Step-by-step explanation:

subtract x from both sides




combine like terms

subtract 1.8 from both sides

divide both sides by 0.3
x=7.5


y=1.5
5n+10-8=2n
5n+2=2n
-3n=2
n=-2/3
<u>Solution-</u>
The atmospheric pressure at sea level = 14.7 lb/in²
Pressure gets reduced by half for each 3.6 miles we move up.
Taking,
x = miles above the sea-level
y = pressure in lb/in²
0 14.7
3.6 7.35
7.2 3.675
10.8 1.8375
It can be observed that both the variables are in inverse proportion as the distance from sea-level increase the pressure decreases.
As only the second graph satisfies the points and inverse proportional condition, so that is the correct graph.
By plotting the graph in excel taking these data set, the following plot was obtained.