Chances to get into an Ivy with one B/C

Hello,

I’ve recently had trouble with Math and I now have a B- in the class and had a C+ last semester. The rest are all A’s. I’m currently a sophomore. I’d like to apply to Ivy League’s when the time comes. I feel like the C+ and the B- affect me greatly. So,if I improve that grade to a B+ or an A in junior and senior year, do I still have a chance?
I’m also going to begin SAT classes this summer, 2150-2400 is the goal. If I did get something within that range, would it be possible even with the C and B on my record?
Thanks!