Answer:
c = 21
Step-by-step explanation:
p = price per guest
4p = 12
7g = c
If these two equations are directly proportional, p times 7 will give us the answer. First, let's figure out what p is:
4p = 12
p = 3 Divide both sides by 4
Now we plug 3 in for g and solve our equation for 7 guests:
c = 7(3)
21 = c
Hope this helps,
♥A.W.E.S.W.A.N.♥
The total cost of the Amber's birthday party when 7 guests are invited is $21 and this can be determined by forming the linear equation.
Given :
Amber's birthday party will cost $12 if she invites 4 guests.
The following steps can be used inorder to determine the the cost of the Amber's party:
Step 1 - Let the price per guest be 'x'.
Step 2 - So, the linear equation that represents the cost of party when 4 guests are invited is:
4x = 12
Simplify the above expression.
x = $3
Step 3 - Now, the linear equation that represents the the cost of the party when 7 guests are invited is:
7x = c
where c is the total cost of the party.
Step 4 - Now, substitute the value of 'x' in the above equation.
7(3) = c
c = $21
For more information, refer to the link given below:
https://brainly.com/question/2263981
