6. The octopus was swimming 3 feet below the surface. If the octopus swam up 3 feet? Represent the octopus location using an integer.
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im not sure of the names, but the answer is 48

$25 becasue a 10 increase would make it from 80 to 50

we know that

1) the inscribed angle measures half of the arc it comprises.

so

m∠dgf= > expression

2) the opposite angles in an inscribed quadrilateral are supplementary angles

so

m∠dgf=

m∠dgf=°

substitute in the expression to find the value of arc ef

therefore

the answer is

the measure of the arc ef is