Answer
Unit price of the pencils = $0.35
Explanation
Let the unit price (price of one pencil) be x
9 pencils = 3.15 dollars
1 pencil = x dollar
We can write a mathematical relationship by cross multiplying
(9) (x) = (1) (3.15)
9x = 3.15
Divide both sides by 9
(9x/9) = (3.15/9)
x = $0.35
Hope this Helps!!!
