You received some inheritance from your great-grandparents. You invested the money for 4 years at 6% rate. If your received $2,160 in interest, how much was inheritance

i pretty sure it is

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