Answer:
a is 67.20 and b is 1267.20
Step-by-step explanation:
first you have to multiply 1200 from 5.6% and you get 67.20 then you have to add 1200 to 67.20 and you get 1267.20
B
-4^3+4(-4)^2-6(-4)-6
-64+64+24-6
-64+64=0