Question 201167
You can find the average cost by dividing the total cost of the items ({{{35k^2+29k+6}}}) by the number of items purchased ({{{5k+2}}}).
{{{C[ave] = (35k^2+29k+6)/((5k+2))}}} First, factor the trinomial in the numerator.
{{{C[ave] = ((7k+3)*cross((5k+2)))/(cross((5k+2)))}}} Now cancel the common factors {{{((5k+2))}}}as shown.
{{{highlight(C[ave] = 7k+3)}}}