I need help to understand how these problem can be solve, cuz have exam tomorrow.

1. An airplane flying at an altitude of 32,000 feet
descends at a rate of 1,300 feet per minute. If
the plane descends for 15 minutes, what would
its altitude be in feet?

2. The angle of the roof on Wendy’s dollhouse
is 56°. She built a scale model of the dollhouse
with a scale ratio of 1:4. What is the measure
of the angle of the roof of the model she built?

Question

I need help to understand how these problem can be solve, cuz have exam tomorrow.

1. An airplane flying at an altitude of 32,000 feet   
    descends at a rate of 1,300 feet per minute. If  
   the plane descends for 15 minutes, what would     
   its altitude be in feet?

2.  The angle of the roof on Wendy’s dollhouse 
     is 56°. She built a scale model of the dollhouse
    with a scale ratio of 1:4. What is the measure  
    of the angle of the roof of the model she built?