Respuesta :

382215

Answer:

the answers are 10(x+15)+20(x+30) and 10x+150+20x+600 and 30x+750

Step-by-step explanation:

the first one becuze that what it would look like if written out then the second one becuze that what it would look like if you distributed the 10 and the 20 that outside the parentheses then the third option because you would then combined like numbers so you would do 10x + 20x to get 30x and 600 + 150 to get 750

hope this help please give brainlist

Answer:

The ones  with asterisks below are correct

Step-by-step explanation:

10 days times (x minutes reading/per day + 15 minutes writing/per day)

+ 20 days times (x minutes reading/per day + 30 minutes writing/per day)

= 10(x+15) + 20(x+30) *****

= 10x + 10*15    +    20x + 20*30

= 10x + 150 + 20x + 600  *****

= 30x + 750 *****

Hope this helps, but have to go now.

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