Final answer:
Shayna will earn $3.75 per hour for each of the 3 Baxter children she babysits. The total earnings can be calculated with the expression: Earnings = $3.75 × 3 × hours worked. For 5 hours, she will earn a total of $56.25.
Step-by-step explanation:
The student's mathematics question involves writing an expression to determine how much money Shayna will earn for babysitting the 3 Baxter children every Saturday, given that Mr. Baxter pays her $3.75 per hour per child. The expression to calculate Shayna's earnings for each Saturday she babysits can be written as:
Earnings = Hourly Rate per Child × Number of Children × Number of Hours Worked
Substituting the given values into the expression gives us:
Earnings = $3.75 × 3 children × h hours
Where h represents the number of hours Shayna babysits on a Saturday. If, for example, she works 5 hours, her earnings for that day would be:
Earnings = $3.75 × 3 children × 5 hours = $56.25
Therefore, Shayna will earn $56.25 for babysitting the Baxter children for 5 hours on a Saturday.