please show me how to do this step by step! thanks

ose that Fenner Smith of Problem 13.2 portfolio between two assets, one of which gives him an expected rate of return of 15 with zero standard deviation and one of which gives him an expected rate of return of 30 and standard of 5. can expected rate of return and the variance of his portfolio by changing the portions in which he holds the two assets. If draw a line with expected return on the vertical axis and standard deviation on the horizontal axis, depicting the combinations that Smith can obtain, the slope of this budget line is (a) 3 (b) -3. (c) 1.50 (d) -1.50. (e) 4.50. ose that Fenner Smith of Problem 13.2 portfolio between two assets, one of which gives him an expected rate of return of 15 with zero standard deviation and one of which gives him an expected rate of return of 30 and standard of 5. can expected rate of return and the variance of his portfolio by changing the portions in which he holds the two assets. If draw a line with expected return on the vertical axis and standard deviation on the horizontal axis, depicting the combinations that Smith can obtain, the slope of this budget line is (a) 3 (b) -3. (c) 1.50 (d) -1.50. (e) 4.50