Harvey plans to use 5 ft of shelving for four shelves whose lengths are to be a series of consecutive even numbers. how many inches long should each shelf be?

if x represents the length of the shortest shelf, which expression would represent the length of the longest shelf?
x + 3
x + 4
x + 6

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