Help! will give brainliest, 5 star, and a like if you can give me the right answer and show a little work. Should be VERY easy! (just simplify)!!

Blank × 10-3 is 2,000 times greater than 1.9 × 10-6. it is also blank times greater than 9.5 × 10-4.

Will give brainliest if you answer question correct

The area of a rectangle is 15+5y square feet. which of the following expressions could be the length of the sides of the rectangle, in feet a. 5 and 3y b. 5 and 3+y c. 5 and 5+y d. 3 and 5+3y