Jacqueline has two part-time jobs. She earns $15 per hour, l, working as a lab assistant, and $12 per hour, s, working as a cashier. This is modeled by 15l+12s. Evaluate for l =5 and s =7 to find how much money Jacequeline will earn at her two jobs this week.
To find how much money Jacqueline will earn at her two jobs this week, we substitute l = 5 and s = 7 into the expression 15l+12s:
15(5) + 12(7) = $<<15*5+12*7=135>>135. Answer: \boxed{135}.