Deborah's playlist on her mp3 player has a variety of songs she had 21 country 18 alternative 16 pop 18 rock use the bar diagram to write and evaluate two numerical expressions to represent the total number of songs on deborah's mp3 player

what i would say the best answer is a. 40.5

for this case we must apply distributive property to the following expression:

the distributive property states that:

then, when applying the property we have to multiply the -2 for each term within the parenthesis: