The owner of a sporting goods store buys pairs of rollerblades for $60 and marks them up 25%. several months later he decides to clear his inventory and sells each pair of rollerblades at a descount of 20%. what is the total price of a pair of these rollerblades with the discount and a 6% sale tax?

How do you find the area of a triangle

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

An elevator travels 310 feet in 10 seconds. at that speed, how far can't his elevator travel in 12 seconds?