I’ve been stuck on this. I need help.

Explanation:

He won a total of $70 over the 10 weeks. However, he spent $2/day for 10 weeks. To find this amount: weeks × days per week × money spent per day (10×7×2=140)

Then subtract the income from amount lost. This will then give you your total amount lost

sentence lenght varies according to word choice.you select which word to use and that will require to use other expressions that collocate with the word chosen.sentence length will vary   according to the choice of words you make to express your ideas.