2.)the resale value of a textbook decreases by 25% with each previous owner. a new textbook is sold for $85. which function represents the resale value of the textbook after x owners?
f(x) = 85(1 – 0.25)^x
f(x) = 85(1 + 0.25)^x
f(x) = 85(0.25)^x
f(x) = (85 – 0.25)^x

(hurry! ) which expression is equivalent to the following complex fraction?

What is the solution to the equation? k/6.4=8.7 2.3 5.568 15.1 55.68

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