This question was not written properly
Complete Question
Which situation is represented by the inequality? 7x + 50 > 4x + 100
a) Molly has $50 and Mary has $100. Molly saves $4 per week and Mary saves $7 per week. How long will it be before Molly has more money than Mary?
b) Molly has $50 and Mary has $100. Molly saves $7 per week and Mary saves $4 per week. How long will it be before Molly has more mon than mm Mary?
c) Molly has $50 and Mary has $100. Molly saves $4 per week and Mary saves $7 per week. How long will it be before Molly and Mary have the same amount of money?
d)Molly has $50 and Mary has $100. Molly saves $7 per week and Mary saves $4 per week. How long will it be before Molly and Mary have the same amount of money?
Answer:
b) Molly has $50 and Mary has $100. Molly saves $7 per week and Mary saves $4 per week. How long will it be before Molly has more mon than mm Mary?
Step-by-step explanation:
In the above question, we are given an inequality equation
7x + 50 > 4x + 100
To find the best expression that represents this equation we would analyse the 4 options that we were given
a) Molly has $50 and Mary has $100. Molly saves $4 per week and Mary saves $7 per week. How long will it be before Molly has more money than Mary?
Let the number of weeks money is saved be represented by x
Hence,
Molly > Mary
4x + 50 > 7x + 100
Option a) is Incorrect
b) Molly has $50 and Mary has $100. Molly saves $7 per week and Mary saves $4 per week. How long will it be before Molly has more money than Mary?
Let the number of weeks money is saved be represented by x
We are asked how long will it be before Molly has MORE MONEY THAN Mary , the inequality sign >
Hence,
Molly > Mary
7x + 50 > 4x + 100
This option matches the sceneraio in the question. It is correct
c) Molly has $50 and Mary has $100. Molly saves $4 per week and Mary saves $7 per week. How long will it be before Molly and Mary have the same amount of money?
Let the number of weeks money is saved be represented by x
We are told the same amount of money , the inequality sign =
Hence,
Molly = Mary
4x + 50 = 7x + 100
This option does not match the sceneraio in the question. It is Incorrect
d).Molly has $50 and Mary has $100. Molly saves $7 per week and Mary saves $4 per week. How long will it be before Molly and Mary have the same amount of money?
Let the number of weeks money is saved be represented by x
We are told the same amount of money , the inequality sign =
Hence,
Molly = Mary
7x + 50 = 4x + 100
This option does not match the sceneraio in the question. It is Incorrect
Therefore, only Option b) match the sceneraio in the above y.
