You purchased nine rolls of streamers and eight bags of balloons for 10.50. later you bought two rolls of streamers and four bags of balloons for 4.00. how much does one roll of streamers cost.

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answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.