Question

Write the solution of the inequality in set builder notation 7-3d>28

Answer 1

D<-7 
{d | d<-7}
Hope this helps!

Answer 2

Answer:

{ x :  x is a real number less than -7 }

Step-by-step explanation:

Given inequality,

$7-3d>28$

$\implies -3d > 28 - 7$

$\implies -3d > 21$

$\implies d < -7$         ( a > b ⇒ na < nb if n < 0 )

That is, all real numbers less than -7,

Now, in set builder form we state the properties of the elements of the set by using the mathematical symbol under the flower bracket {} .

Thus, the required set would be,

{ x :  x is a real number less than -7 }