<h3>
The total number of beads used in making 37 necklaces is between 2,664 beads and 2,849 beads.</h3>
Step-by-step explanation:
Here, as given: The number of necklace made by Opal  = 37
The least number of bead used in each necklace  = 72
So, if each necklace is made using the least number of beads then,
The total number of beads  used in 37 necklace =  37 x ( beads in 1 necklace)
= 37 x  72  = 2,664 beads
So, the least number of total beads used in 37 necklaces  = 2,664 beads
The highest number of bead used in each necklace  = 77
So, if each necklace is made using the highest number of beads then,
The total number of beads  used in 37 necklace =  37 x ( beads in 1 necklace)
= 37 x  77  = 2,849 beads
So, if highest number of total beads used in 37 necklaces  = 2,849 beads
Hence, the total number of beads used in making 37 necklaces is between 2,664 beads and 2,849 beads.