Express the following division in the form of a + bi: (1+3i)(2+i)

Step-by-step explanation:

We proceed to present the procedure by algebraic means:

1) Given

2) Distributive and Commutative Properties

3) Distributive, Commutative and Associative Properties

4) Definition of imaginary number/Distributive, Commutative and Associative Properties

5) Commutative and Associative Properties

(d)

step-by-step explanation:

given: the line in the graph passes through points (5,30) and (6,26).

then, the equation of line is:

now, put y=a(n) and x=n,

hence, option d is correct.

i can't see the picture : /