Answer:
Step-by-step explanation:
The time (minutes) vary directly with the number of walls and inversely to the number of people.
m = kw/p, where m = minutes, w = walls, and p = people
60 = 5k/7
420 = 5k
84 = k
m = 10(84)/10
m = 84
Divide 30 ft by 5280 ft and you get 0.00568182 then round that number
The graph of x / tan x is symmetrical about the y-axis do its an even function
Graph of sec x / x has symmetry about the origin so its an odd function.
It is 10^18:1000000000000000000
780
9.74 is 1/80 of the actual height. so 9.74*80=780