The point A, B,C and D represent the complex numbers z1, z2, z3 and z4 and O is the origin. a)if OABC is parallelogram, and z1 = 1 + i and z2= 4+ 5i find z3 b) find z2 and z4 when ABCD is a square whera z1 = 2 + i and z2 = 6 + 7i​

answer: first option i.e. 'a' is correct.

step-by-step explanation:

since we have given that

number of minutes to wrap a small gift box = 4 minutes

we need to find the number of gifts to be wrapped in 5 minutes

since there is a direct variation, as the number of minutes will increase with   number of gifts to be wrapped.

so, let the number of gifts to be wrapped in 5 minutes be x.

so, it becomes,

hence, first option 'a'   is correct.