Plz help, I'm so confused! So when you are measuring in feet and inches, which is this ( " )and which is this ( ' )

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

If on=8x-8,lm=7x+4,nm=x-5,and ol=3y-6

Aplane is flying at 32,500 feet. it needs to rise to 36,000 feet in two stages.• in stage 1, it rises 5% of its initial altitude of 32,500 feet.• in stage 2, it rises at a rate of 125 feet per minute.how many minutes does it take for the plane to rise during stage 2?