Your friend works different times on different days. She calculates her average hourly income using the expression 4(79.95 + 5.28)/(2 ⋅ 3.4) + (3 ⋅ 4.5). Which best describes the structure of the expression? A. sum/product
B. The difference between a product and a sum
C. product/sum
D. product/difference

I don't really understand the question, can someone explain? - ⌓ -
Thanks!

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