Answer: She needed 
to make a cup of jam .
Step-by-step explanation:
Since we have given that
Sarah used 
pound of blueberries to make 
cup of jam.
As we need to find the number of pounds of blueberries she would need to make a cup of jam.
So, we will use "Unitary Method":
Hence, She needed to make a cup of jam .
Answer:
You're right must be a different problem
Step-by-step explanation:
You know this, but just to verify:
1. Find Common Denominator:
6 15/21 - 6 7/21
2. Subtract
6 15/21 - 6 7/21 = 8/21 feet
Answer:
Step-by-step explanation:
Given
Represent charges with d and time with h
So:
when 
Required
Determine the formula
In other words,
Convert to an equation
Where
k = constant of proportion
Substitute values for Charges and Time
Solve for k
Substitute 15 for k in
<em>The above formula models the situation</em>
