Answer:
32.both of their ideas are correct whether it is to replace x or y first it doesn't matter only one can be replaced to find the value of the other.
33.It doesn't really matter all of them are correct.
Answer:
670 animals
Step-by-step explanation:
First, round both numbers to the nearest ten. Remember that the numbers 4 and under round down (e.g. 143 = 140) and the numbers 5 and above round up (e.g. 145 = 150).
218 = rounds up = 220
454 = rounds down = 450
Finally, add the rounded numbers together.
220 + 450 = 670
The zoo has approximately 670 animals.
