Question

Which situation CANNOT be represented by this equation? 4x+7=31

Options are

A: Taliba has $31 to order phone cases online.
She buys 4 phone cases and pays a $7 shipping charge.
What is x, the cost of each phone case?

B. Taliba is ordering phone cases that cost $4 each online.
There is also a $7 shipping charge.
If she has $31 to spend, how many phone cases, x, can she buy?

C. Taliba has $31 to order phone cases online.
Each phone case costs $7, and there is a $4 shipping charge.
How many phone cases, x, can Taliba buy?

Answer 1

C. Taliba has $31 to order phone cases online.
Each phone case costs $7, and there is a $4 shipping charge.
How many phone cases, x, can Taliba buy?

is the answer

Answer 2

the correct answer to your question is going to be option C. if we look at the equation 4x + 7 = 31, we can see that 4x stands for a number that changed depending on how much of something x can be. the 7 in the equation stands for something doesnt change depending upon variables how much or how little x will be. knowing this, if we look at option C we read that each phone case cost $7 while $4 is how much it costs to ship. since this problem is about how many $4 phone cases Taliba can get, C would incorrect because they say that $7 is the post of each phone case.
let me know if you have any further questions
:)