The solution to the question "write an expression to show the total of beads that lina uses" is:
The number of beads Lina has = 7
The number of beads in the four packets = 4n
The total number of beads that Lina now has = 4n + 7
The number of beads Lina originally has = 7
The number of additional packets bought = 4
Let the number of beads in each packet be n
Total number of beads in the 4 packets = 4 x (number of beads in each packet)
Total number of beads in the 4 packets = 4n
The total number of beads that Lina now has = (The number of beads in the 4 packets) + (The number of beads she originally has)
The total number of beads that Lina now has = 4n + 7
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