Answer:
53. ±6
51. 2
Step-by-step explanation:
According to the Order of Operations [GEMS\BOMDAS\PEMDAS etc.], in this case, evaluate everything in grouping symbols first, then evaluate the exponents to avoid confusion:

I am joyous to assist you anytime.
Answer:
63360 inches in one mile so you can do the rest of the math
Answer:
y=78
Step-by-step explanation:
y=13(x-4) 2-4
y=(13-52) -2
y=(-24+104)
y=78
It is 52 because when roundest to the whole number 52 is closest
13. Is 18
15. Is 86
17 is 5
19 is 15
21 is 24
23 is 29