In February, Calvin's school used 4,920 pounds of rock salt to melt
ice on its sidewalks. One bag contains 40 pounds of rock salt.
Choose Yes or No to tell which of the following equations can be
used to find how many bags of rock salt, b, Calvin's school used
in February
30a. 4,9206 = 40 Yes No
30b. 40b = 4,920
30c. 4,920 + 40 =
b Yes No
30d. 4,920 = b = 40
O Yes
0 Yes
No
O No