Mario's $15,000 car depreciates in value at a rate of 19% per year. The value, V, after t years can be modeled by the function
V = 15,000(0.81). Which function is equivalent to the original
function?
(1) V=15,000(0.9)^9t
(2) V=15,000(0.9)^2t
(3) V=15,000(0.9)^t/9
(4) V=15,000(0.9)^t/2

The figure shows triangle def and line segment bc, which is parallel to ef: triangle def has a point b on side de and point c on side df. the line bc is parallel to the line ef. part a: is triangle def similar to triangle dbc? explain using what you know about triangle similarity. part b: which line segment on triangle dbc corresponds to line segment ef? explain your answer. part c: which angle on triangle dbc corresponds to angle f? explain your answer. asap