Which choice represents the number of cookies Rhianna must sell for 35 cents each to make more than $15.

To find out how many cookies (at 35 cents each) must be sold to make more than $15.00,

divide $15.00 by 0.35  --->   42.85... cookies

So she must sell at least 43 cookies.

Checking:  43 x 0.35  =  15.05 ...