Answer:
20 
your welcome 
Step-by-step explanation:
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5 = 29
6 = 34
7 = 39
8 = 44
9 = 49
10 = 54
11 = 59
12 = 64
13 = 69
14 = 74
15 = 79
No. Leila will not have climed 86 flights by the end of 15 weeks
        
             
        
        
        
Jasmine can run in one hour is 7.25 miles.
<h3>What is the formula of unitary method?</h3>
The formula of the unitary method is to find the value of a single unit and then multiply the value of a single unit to the number of units to get the necessary value.
Given that,
Jasmine can run 4 miles in
 miles in  of an hour.
 of an hour.
  of an hour = 4
 of an hour = 4 miles
 miles
                      =  miles
 miles
 By using unitary method we will find the value of an hour.
1 hour = 
           =   ×
 × 
           = 
1 hour  = 7.25 miles
Hence, Jasmine can run in one hour is 7.25 miles.
To learn more about unitary method from the given link:
brainly.com/question/10673687
#SPJ4
 
        
             
        
        
        
-- The whole discussion involves 4 rooms, never more and never less,
so we can call the 4 rooms "1 job" for simplicity.
-- Patrice, by himself, does the job in 10 hours.  So he does 1/10 of 
the job each hour.
-- Working together, Patrice and April do the job in 6 hours.  So when 
they work together, they do 1/6 of the job each hour.
-- April's part of the job is (1/6 - 1/10) = (5/30 - 3/30) = 2/30 = 1/15 job per hour.
-- Her unit rate alone is  1/15 job per hour, or  <em>15 hours</em> per job.
        
             
        
        
        
Set each factor EQUAL to zero to find the zeroes (since it is not actually equal to zero, you will use an open circle when graphing and an open bracket when writing in interval notation). 
x = 0           x-1 = 0             x + 4 = 0
                    x = 1                x = -4
Next, choose a value to the far left, between each of the zeroes, and to the far right to evaluate if it makes a true statement when input into the given inequality.
far left (I choose -5): -5(-5 - 1)(-5 + 4) > 0   →  (-)(-)(-) > 0  →   negative > 0  FALSE
- 4 to 0 (I choose -2): -2(-2 - 1)(-2 + 4) > 0   →  (-)(-)(+) > 0  →   positive > 0  TRUE
0 to 1 (I choose 0.5): .5(.5 - 1)(.5 + 4) > 0   →  (+)(-)(+) > 0  →   negative > 0  FALSE
far right (I choose 2): 2(2 - 1)(2 + 4) > 0   →  (+)(+)(+) > 0  →   positive > 0  TRUE
Answer: (-4, 0) U (1, ∞)