$1.87 is the answer
explanation: divide $7.48 and 4 because it says per each marker and a little trick: each = divide or multiply! good luck with your school <3
        
             
        
        
        
Answer:
Step-by-step explanation:
For any prism or cylinder for that matter, you can find the volume by multiplying the area of the base times the height.  So this problem just becomes simple algebra.
B * h = V
25 * h = 80
h = 80/25
h = 3.2
If you don't get why it's the area of the base let me know and I can try to explain it.  
 
        
             
        
        
        
This may not be correct, but i got 11520/7
Hope this helps.
        
             
        
        
        

Answer:
 1 \times \frac{3}{5} + ( \frac{7}{10} )
 
        
                    
             
        
        
        
For this case the distance will be given by:
 d ^ 2 = (12 * 1.5) ^ 2 + (8 * 1.5) ^ 2
 Rewriting we have:
 d ^ 2 = (18) ^ 2 + (12) ^ 2
 d ^ 2 = 324 + 144
 d ^ 2 = 468
 d = root (468)
 d = 21.63 Km
 Answer:
 1) She did not find the full distance each traveled in 1.5 hours.
 2) She should have used 12 km for Joseph's distance and 18 km for Isabelle's distance.