The expression for the situation regarding the wedding singer is 15 + 60x.
The independent variable is the travel expense.
The dependent variable is the amount per hours.
It ie important to note that an expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both. Addition, subtraction, multiplication, and division are all possible mathematical operations.
Let the number of hours be x
Since the wedding singer is paid $60 per hour plus $15 for travel expenses, the expression will be:
= 15 + (60 × x)
= 15 + 60x
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