Answer:
12.8 seconds
Step-by-step explanation:
Create a proportion where x is the number of seconds for 80 feet
 =
 = 
Cross multiply and solve for x
25x = 320
x = 12.8
So, the answer is 12.8 seconds
 
        
             
        
        
        
Expanded form is the form of writing numbers in addition. Example: 653 would be 600+50+3 in expanded form. .37 using powers would be 37×10^-2 .
In expanded form, we just need to expand the 37 because it is the only one with 2 different places without a 0 in either one.
Answer: 30+7×10^-2 would be the expanded form of .37 using powers of 10.
 
        
             
        
        
        
Answer:1.55?
Step-by-step explanation:
 
        
                    
             
        
        
        
The correct answer is 1.75 because the equation is p=.50+1.25 which equals 1.75. 
        
                    
             
        
        
        
Y = mx + b
slope(m) = 7
(5,30)...x = 5 and y = 30
now we sub and find b, the y int
30 = 7(5) + b
30 = 35 + b
30 - 35 = b
-5 = b
so ur equation is : y = 7x - 5 <==