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Allen found four marbles to add to his five marbles currently in his pocket he then had a competition with his friends and tripled his marbles write a numerical expression to model the situation without performing any operations so let's think about what's going on so he already had five marbles in his pocket so he already had five marbles in his pocket and then he found four more marbles to add to that so we can add the four marbles to the five marbles so four marbles plus the five marbles so that's what happens after the first sentence he he found four marbles to add to his five marbles currently in his pocket he then had a competition with his friends and tripled his marbles so this is how many marbles he had before tripling and now he's tripling now he's tripling his marbles so we'd want to multiply three times the total number of marbles he has now times four plus five so this right over here is the numerical expression that models the situation without any without performing any operations we of course could then actually calculate this he now has he has nine marbles before tripling and then you multiply it by three and he is 27 but this is what they're asking for they want us they want us to write this expression