The cost of mailing a first class letter is $.46 for the 1st ounce and $.20 for each additional ounce or a portion of an ounce and Y represents the total cost for mailing a letter that weighs X ounces which type of function model would be appropriate for the situation

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step-by-step explanation:

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.