Question 403676
a certain gas will escape from a storage tank according to the formula e=180√(p),
 where e represents the amount escaping per minute in gallons, and p represents
 the pressure in pounds per square inch.
 What is the pressure on the gas when about 225 gallons per minute are escaping?
:
Replacing e with 225, we have
{{{180sqrt(p)}}} = 225
divide both sides by 180
{{{sqrt(p)}}} = {{{225/180}}}
{{{sqrt(p)}}} = 1.25
square both sides
p = {{{1.25^2}}}
p = 1.5625 psi
:
:
Check this on a calc: enter {{{180sqrt(1.5625)}}} results: 225