Let x represent the total number of chocolate cups and y represent the total number of vanilla cups Beth buys.
She needs a total of 24 ice cream cups. So, the equation can be written as:

The number of chocolate cups she needs are twice as compared to vanilla, so we can write the equation as:
Case 1: Only constraint
2 would be met if 9 vanilla cups and 18 chocolate cups were purchased.
This is because the number of chocolate cups are double as compared to vanilla cups but the total number of cups in this case is not 24. So constraint 1 is not met.
Case 2: Only constraint
1 would be met if 6 vanilla cups and 18 chocolate cups were purchased.
This is because the total number of cups in this case is 24 but the chocolate cups are three times as compared to the vanilla cups. So the constrain 2 is not met in this case.
883.6 ......................
Answer:
Step-by-step explanation:
Four hundred six
Brian was billed for 171 minutes.
Step-by-step explanation:
Given,
Monthly fee of phone = $8
Charges per minute = 6 cents = $0.06
Last month bill of phone = $18.26
Let,
x be the minutes billed.
Therefore,
Monthly fee + 0.06*minutes = Total bill

Dividing both sides by 0.06

Brian was billed for 171 minutes.
Keywords: linear equation, division
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The given states that line BC is congruent to line EC and line AC is congruent to line DC. By the vertical angles theorem, angle BCA is congruent to angle DCE. By SAS, triangle BCA is congruent to triangle DCE. Using CPCTC, it can be concluded that line BA is congruent to line ED.