Answer:
The value is 
Step-by-step explanation:
From the question we are told that
The length of the treads is 
The length of the risers is 
Generally the slope of the staircase is

=> 
=> 
Answer:
because after decimal then value 0 dont have meaning
It's C. it does not ship because 480 is more than 2.57 deviations from 500
Guess this is how it should look like, not sure what the instructions on drawing an x through the segments mean, but hope this helps!
Formula for area:
Area = Wide x Length
Wide: x + 5
Long: 3x - 2
Area = (x + 5) x (3x - 2)
Area = 3x² - 2x + 15x - 10
Area = (3x² + 13x - 10) square feet