I would go with A but I am not 100% sure so you may want to check however you can.
Answer:
Part a) 
Part b) 
Part c) 
Part d) 
Step-by-step explanation:
see the attached figure to better understand the question
we know that
To find the length of the image after a dilation, multiply the length of the pre-image by the scale factor
Part a) we have
The scale factor is 5
The length of the pre-image is 3 cm
therefore
The length of the image AB after dilation is

Part b) we have
The scale factor is 3.7
The length of the pre-image is 3 cm
therefore
The length of the image AB after dilation is

Part c) we have
The scale factor is 1/5
The length of the pre-image is 3 cm
therefore
The length of the image AB after dilation is

Part d) we have
The scale factor is s
The length of the pre-image is 3 cm
therefore
The length of the image AB after dilation is

Answer:
$0.31
Step-by-step explanation:
1.55/5=0.31
So if each ear of corn cost $0.31 than 5 times .31 should equal $1.55
5x.31=1.55
Yes!
Answer:
The shortcuts is
Divide number of units by 100
Step-by-step explanation:
From the question we are told that
insulin u-100 is 
From the data given above we see that
100 units of insulin u-100 is contained in 1 mL
So 1 unit of u-100 is contained in x mL
=> 
This means that a unit of insulin u-100 occupies 
So we can represent a single unit of insulin u-100 as 
Now if 1 unit of insulin u-100 is represented as 
Then y unites of insulin u-100 is represented as z
So

From the above calculation we can see that the shortcuts to convert u-100 insulin given in units, to mL is to divide number of units by 100
The first one is 0.5 the second one is 125 and the third one is 0.2 and the fourth one is 5 I think those are the answers