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Mathematics, 13.07.2019 23:10 Gabby1128

Lets say i will have a party and i invited 45 ppl but my mom says that some guests might not attend. she also asks to calculate the amoumt of money all the snacks would be if it would costs $3 each. so i wrote:
3•x
it's the right equation but how do i know the answer
plz super fast i need this now! will mark brainliest

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