Mariana wears her winter coat when the temperature is -4 degrees Celsius. write an inequality that is true for temperatures (t) at which Mariana wears her coat.

Question

I just don't get how to do it. 

Answer 1

Assuming Mariana will wear her coat in colder temperatures, the inequality should be x less than or equal to -4 degrees Celsius. X represents the temperatures that Mariana will wear her coat.

 

For example, temperatures colder than -4 degrees Celsius are -5 degrees Celsius, -6 degrees Celsius, and so on. Therefore, when thinking about negative values, numbers less than -4 are larger negative values.

 

Unfortunately I cannot write the inequality sign with the equal to sign (line underneath) on this post, but the inequality should be written as x<4 with the line underneath the less than sign.

Answer 2

It looks like you are saying she wears her coat whenever

the temperature is less than or equal to -4 degrees Celsius.

If so the inequality for when she wears the coat is:

 

t ≤ -4

 

If you mean she wears it when the temperature is less

than 4 degrees then:

 

t < 4