Answer:
B that's the answer for that
Well , i took a while to understand the question , lol . I guess the answer is. 7 students
Step-by-step explanation:
It is in the form of a² - b²
so it's correct product is
64x² - 16
The number is 8 since 9 squared is 81
put 63 and 9 into a ratio. so it’s 63 chapters to 9(63:9) .