Answer:
( ) *0.06
) *0.06
Step-by-step explanation:
Cleo buys x packs of markers, y wide-ruled notebooks, and z college-ruled notebooks. 
All spiral-bound notebooks, whether wide-ruled or college-ruled, sell for $1.20 each. This gives expressions : 1.20y and 1.20z
A store sells four-packs of permanent markers in assorted colors for $3.19 per pack. Cleo buys x packs of markers so expression becomes :
 (3.19 per pack)
 (3.19 per pack)
As Cleo buys x packs of markers, y wide-ruled notebooks, and z college-ruled notebooks. 
The combined expression becomes:

The store charges a 6% sales tax on Cleo’s total bill. So, expression becomes:
( ) *0.06
) *0.06