Please help I’ll mark you as brainliest if correct!

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

What is the solution to the system of equation graphed belowa.(0,-4)b.(2,5),1),-3)

[tex]5 \times1 \frac{12}{13} [/tex] me