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:
Chris still owes Kate $18
You need it to be solved?
Answer:200,000
Step-by-step explanation:
If it increases 5% every year in 20 years it will Have increased 100% therefore the number would have doubled
Answer: There are 19 classes
Step-by-step explanation:
divide the total amount amount of students by the amount of students in each class