Find the product of the sum of 77 and 27 and the difference of 71 and 42

The table represents a function. what is f(-2)? a.-3 b. -1 c.1 d.3

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)

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