21. When background colors B1 and B2 are mixed with foreground color F, the resulting pixel color P is a. P=t0*F+t1*B1+(1-t0-t1)B2 b. P=t0*F-t1*B1+(1-t0-t1)B2 c. P=t0*F+t1*B1+(1+t0+t1)B2 d. Only a
Answer D is correct, Explanation - When background colors B1 and B2 are mixed with foreground color F, the resulting pixel color P is a. P=t0*F+t1*B1+(1-t0-t1)B2.
