Cory’s average score after 8 tests is 91%. If he gets a 78% on his 9th test, what will his new average be?

do you have a picture of the table

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.

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step-by-step explanation: easy math