Answer:
To get the answer you need to understand the differences between the two in order to use common sense to get the answer
First you’ve got to calculate the inequality which is based on the weather
then look at the multiple choice questions and see which one represents the problem the best and that is… C.
Answer: 
Step-by-step explanation:
If you meant to solve for "z", then refer to the attachment below.
You would have to multiply the top and bottom of both fractions, to get equal number between them,
Answer:
First off, I can't solve for y, there is no y variable.
Second, 3 = 7 ( 1 - 1 ) is not true because 3 ≠ 0 ( 3 doesn't equal 0 ) :
3 = 7 ( 1 - 1 )
3 = 7 ( 0 ) ( Simplify Parenthesis )
3 = 0 ( Multiply 7 and 0 )
3 ≠ 0
