need help with 12 and 13

Question 12 (1 point) Sue has $71,000 invested in Stock A with a beta of 1.30 and another $56,000 invested in Stock B with a beta of 60. If these are the only two investments in her portfolio, what is her portfolio's beta? a) 0.898 b) 0.991 O c) 1.080 d) 1.125 e) 1.196 NUMUR What is the beta for the following portfolio? Stock A B D Investment 5,000 7.500 9,000 15.000 11.500 Beta 0.65 10.85 1.25 0.89 1.42 mo E O a) 1.053 b) 0.978 OC) 1.045 1.134