What is 4x over y squared ?

What value of x is in the solution set of 4x – 12 s 16 + 8x?

Abacteria population is tripling every hour. by what factor does the population change in 1/2 hour? select all that apply

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