The correct equation to determine the price , p , of n sets of these pencils will be;
⇒ p = $6.25n
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
A package pf pencils cost $6.25 per set at office supply store.
Now,
Since, A package pf pencils cost $6.25 per set at office supply store.
Hence, The cost of p for n sets of these pencils is,
⇒ p = $6.25n
Thus, The correct equation to determine the price , p , of n sets of these pencils is,
⇒ p = $6.25n
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14 isn't correct.
14. y : 6 x : -2
16. y : 1 x : -1/3
18. y : -5/3 x : -1