Yes it is. In order for something to be a function, no X values can be the same, which is the case here.
Answer:
160,160
Step-by-step explanation:
let the first page be X
second one be x+1
x+x+1=321
2x=320
x= 320÷2=160
pages 160 161
Answer: 6
Explanation:
3(4-2) = 3(2) = 6
25 divided by 5 is 5, 45 divided by 9 is 5
