Jelani wrote the system of linear equations below to represent the number of student and adult tickets he and his friend sold to their school play.

12s+10a=128

16s+21a=232

Jelani also wrote the augmented matrix to represent this system. Which matrix could Jelani have written?

(12 10 128)

(12 10

16 21)

(12 10 128

16 21 232)

(12 16

10 21

128 232)

The first thing you should know for this case is that linear systems of equations can be written as follows:

Ax = b

Where

A: coefficient matrix of the unknowns.

x: incognita vector.

b: vector solution of each equation.

The augmented matrix is then

(A l b)

Therefore the augmented matrix of this system of equations is

(12 10 128

16 21 232)

answer

Jelani have written

(12 10 128

16 21 232)