Answer:
Z=1
Step-by-step explanation:
25z+100=125
25z=25
Z=1
I am not 100 percent sure but i think you multiply and the answer is 7.75 if not then try to divid how you get 7.75 is you make 3/4 into a decimal and that becomes 0.75 them multiply by 10 and get 7.75
The answer is .48 because 6/15 is 4. which means .48 is bigger