Respuesta :

Answer: phoebe: $135

Andy: $90

Polly: $45

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

3x + 2x + x = 270

X = 45

3(45) + 2(45) + 45

135 + 90 + 45 = 270

$270

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