Complete the statement. the drawing is not to scale. if m∠dgf =84°, then m∠def = a- 42° b- 84° c- 48° d- none of these. my answer would be b or d. any is

Here in the figure ΔDGF and ΔDEF are similar to each other by AAA criteria.

as ∠GDF = ∠EDF

∠DGF = ∠DEF

and ∠GFD = ∠EFD

So ∠DGF = ∠DEF =84° (Answer).

the answer is y < -3 or   y > 3

-3y > 7 + 2

-3 y > 9

y < -3