Answer:
$55.90
Step-by-step explanation:
First, create an equation representing her earnings each day.
Let x represent the number of hours that she walks the dog.
Since she charges $10.30 per hour, the cost from walking is 10.3x
She also charges $3.75 as a base fee, which has to be added
Putting this together, we get the equation y = 10.3x + 3.75
Plug in 5.5 as x to find her earnings:
y = 10.3x + 3.75
y = 10.3(5.5) + 3.75
y = 60.4
Since the spends $4.50 on dog treats a day, we have to subtract this from her earnings:
60.4 - 4.5
= 55.9
So, if she works for 5.5 hours, she will earn $55.90