she had 98 but spent 10.85 so she now has:
98-10.85 = 87.15
skateboard cost 64
87.15 -64 = 23.15 is what she can spend on cookies
23.15 / 1.65 = 14.03 she can't buy more than 14 cookies
so answer is c. n ≤ 14
There's an app called photomath that would be useful for these kinds of problems!
Answer:
Step-by-step explanation:

There are
7 red balls
8 red balls
1 yellow ball
Hope this helps have a good day! :)