I am reviewing Algebra for my GRE test. Here is one inequality problem that I do not understand...
I will provide the equation, the choices of answers, and their answer. I want to know HOW they solved it! Thank you!
Equation:
the letter x represents variable "x"
Equation writing in words: If 3x PLUS 4 is GREATER THAN Seventeen, 3x PLUS 7 is GREATER THAN
If 3x + 4 > 17, 3x + 7 >
Choices for Answers:
A.
13
-----
3
B.
22
-------
3
C. 14
D. 17
E. 20
Their answer:
3x + 7 = (3x + 4) + 3 > 17 + 3 = 20
I appreciate any feedback for this type of inequality problem!
Thank You