Answer:
[tex]\left[\begin{array}{cc|c}20&12&552\\1&1&34\end{array}\right][/tex]
Step-by-step explanation:
Two equations can be written: one for the total expense, and one for the number of pieces of equipment. The unknowns in this scenario are the numbers of bats and gloves, which we can represent using the variables b and g. Then the system of equations is ...
20b +12g = 552 . . . . . . equation for total expense
b + g = 34 . . . . . . . . . . . equation for pieces of equipment
The augmented matrix is the matrix of the coefficients in these equations:
[tex]\left[\begin{array}{cc|c}20&12&552\\1&1&34\end{array}\right][/tex]
_____
The solution to these equations is ...
(b, g) = (18, 16)