3 small ones and 3 big ones because 3*7=21 plus 10*3=20 =51
Answer:
Option D.
Jenn's answer is not correct. She got it substituting 
into the equation and solving for "x".
Step-by-step explanation:
Given the following equation:
Since you need that 
, you hace to substitute that value into the equation:
Now you need to solve for "c":
Therefore for a a value of 
, you get
Then, the you can identify that the correct answer is the one given in the Option D.
Jenn made a mistake, because she substituted into the equation and then solve for "x":
In this question it is already given that a person travels 8 miles in 0.5 hours. This is enough information to get to the required answer. Let us first write down all the information's that are already given in the question.
In 0.5 hours the person covers a distance = 8 miles
Then
In 1 hour the person covers a distance of = 8/0.5 miles
= 16 miles
So the speed of the person in miles per hour = 16/1 miles/hour
= 16 miles per hour
A, I think
none of them have anything higher than a 2, so yeah
It is already in simplest form, since 17 is a prime number.
