Answer:
25 times
Step-by-step explanation:
Scale factor is the ratio of dimensions of the image and the preimage.
Scale factor = 
Since area of a figure is the square of dimensions.
Area = Length × Width
Therefore, area scale factor will be the ratio of square of the dimensions of image and preimage.
Area scale factor = 
= (Scale factor)²
= 5²
= 25
Therefore, area of the image will be 25 times the area of the preimage.
Answer:

Step-by-step explanation:
As per the statement:
Quinton bought x number of shares for p dollars and paid a 1% commission
⇒He brought = 
It is also given that he sold the stock for y dollars and paid a flat fee of $7.
⇒He sold = 
then;
Net proceed is given as:

Therefore, quintons net proceeds algebraically is 
Answer:


Step-by-step explanation:
Given


Solving (a): The mean
The mean of a uniform distribution is:

This gives:



Solving (b): The standard deviation
The standard deviation is:

This gives:





Answer:
80 machines
Step-by-step explanation:
If a machine makes 20 gadgets every fourth (1/4) of an hour, it makes 80 machines every hour (20*4).