The Treasury bill rate is 5% and the market risk premium is 7%.

Project	Beta			Internal Rate of Return, %
P		0.95		14
Q		0.00		14
R		3.00		26
S		0.35		15
T		2.30		28

a. What are the project costs of capital for new ventures with betas of 0.70 and 1.65? (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.)

b. Which of the capital investments shown above have positive (non-zero) NPV's? (You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answer and double click the box with the question mark to empty the box for a wrong answer.)