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Which expression is equivalent to 8(k + m) − 15(2k + 5m)?

Avery’s piggy bank has 300 nickels, 450 pennies, and 150 dimes. she randomly picks three coins. each time she picks a coin, she makes a note of it and puts it back into the piggy bank before picking the next coin.

X– 4 = 12.5 can be written in words as