Answer:
[tex]36s+60l[/tex]
Step-by-step explanation:
Let [tex]s[/tex] be the amount of small photos your printer needs to print.
Let [tex]l[/tex] be the amount of large photos your printer needs to print.
Since it takes 36s to print a small photo and 60s to print a large photo, we can form the expression: [tex]36s+60l[/tex]