Answer:
5319
Step-by-step explanation:
There are two ways that the answer can be determined
Method 1
0.1 x 5710 = 571
5710 - 571 = 5319
Method 2
If the plants planted this year are 10% fewer, the plants this year are (100% - 10%) 90% of last year's plant
90% x 5710
0.9 x 5710 = 5319