Answer:
(-10,0)(-5,0)(-10,-10)(-10,-5)
Step-by-step explanation:
If we count each box as one unit then we just count and if you left or down it is negative
 
 
        
             
        
        
        
Answer:
1.5x = 7.5   (a)
Step-by-step explanation:
If Billy has $7.50 remaining, then he can buy x no. of boxes.
Each box costs $1.50 
So, 1.5x = 7.5
 
        
             
        
        
        
Answer:
eukaryotic cells (cells that have a nucleus) and prokaryotic cells (cells that do not have a nucleus)
Step-by-step explanation:
 
        
             
        
        
        
Try this suggested option, answers are marked with colour.
 
        
             
        
        
        
Answer:
61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.                 
Step-by-step explanation:
Given : We want 95% confidence that the sample mean is within 3 minutes of the population mean, and the population standard deviation is known to be 12 minutes.
To find : How many commuters must be randomly selected to estimate the mean driving time of Chicago commuters? 
Solution : 
At 95% confidence the z-value is z=1.96
The sample mean is within 3 minutes of the population mean i.e. margin of error is E=3 minutes
The population standard deviation is s=12 minutes
n is the number of sample
The formula of margin of error is given by,

Substitute the value in the formula,




Squaring both side, 

Therefore, 61 commuters must be randomly selected to estimate the mean driving time of Chicago commuters.