Answer:
Equations are
J=j → (1)
L=$2.90+J=$2.90+j → (2)
Jess earn $20j in 20 hours
Step-by-step explanation:
Given that Laura earns $2.90 more per hour than her friend, Jess.
we have to write an equation to show Jess earns per hour.
As j represents hourly rate of Jess i.e
Jess earns $j per hour.
∴ J=j → (1)
As Laura earns $2.90 more per hour than her friend, Jess
⇒ L=$2.90+J=$2.90+j → (2)
Eq (1) and (2) are required equation.
we have to find how much Jess earn in 20 hours
Hours=20
∴ In 1 hr Jess earn $j
In 20 hrs Jess earn $ 20j
