Answer:
b. z is less than -7
Step-by-step explanation:
Hope this helps. Solution is attached on the image above.
Answer:133.33%
Step-by-step explanation:
For given change in fractions from
to 
The initial fraction=
New fraction= 
Change in fractions= New fraction-Initial fraction

As change in fraction is positive thus it is an increase.

Gina wants to know how many quarters she has if she has seventeen dollars and seventy-five (17.75)cents in all quarters. To find he number of quarters, you need to divid seventeen dollars and seventy-five cents (17.75) by twenty five cents (0.25) to get her answer.
17.75/0.25=71