Using a system of equations, it is found that the number of golfers in the cafeteria is of 5.
A system of equations is when two or more variables are related, and equations are built to find the values of each variable.
In this problem, the variables are:
The number of baseball players is one less than twice the number of golfers, hence:
x = 2y - 1.
Since x = 9:
9 = 2y - 1
2y = 10
y = 5.
There are 5 golfers in the cafeteria.
More can be learned about a system of equations at https://brainly.com/question/24342899
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