A Bắt đầu

GỢI Ý 1
có thể được viết lại thành .

cũng có thể được viết lại thành
.

GỢI Ý 2
Nhớ lại luật chỉ mục rằng:

Hai chức năng nào tương đương với
y=1/3x

she will sew have sewn five dresses   and be 1/3 done with the sixth one in an hour.

step-by-step explanation:

3/4 of an hour=45 mins

lucy makes 1 dress per 11.25 minutes

45 mins+11.25 mins=56.25 mins

60 mins- 56.25 mins=3.75 mins

3.75 mins is 1/3 of of 11.25 mins

therefore she the other 1/3 would be part of the hour and she will have sewn 5 dresses and begun the sixth.

contact me if you have any questions you are welcome.

step-by-step explanation:

your answer would be c