Answer:
y=-7
Step-by-step explanation:
This is an expression, not an equation. y is -7 for any value of x, so f drops out of the equation and it beomes an expression.
tangent = opposite / hypothenus
tan C = ED / DC
tan C = 28 / 53
With what.. is not clear out here
6.5
6 times 1 is 6
5 times 1/10 is 0.5
6+0.5 is 6.5