Answer:

Step-by-step explanation:
2.485 is round to 450 and 450 divide by 15 equals 30. 485 divide by 15 32 r 5
Y= -35
Y = -1
I put the work in the picture below!
(Hint: just substitute the x for its number and do simple adding and subtracting)
Answer:
b & d
Step-by-step explanation:
If you mean z to the powers given the answer will be B