The cost to rent an instrument is $65 for the first month. It costs $30 for each additional month,x, that the instrument is rent
2 answers:
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Eight x plus y equals two over seven
Let's begin by listing out the information given to us:
There are four students: n = 4
Number of students to be selected: r = 2
To calculate the combination of 2 students to be chosen, we use:
Therefore, there 12 possible combinations from these