Answer:
x
Step-by-step explanation:
With no other information given, if she works x hours in a week, then the expression is simply x.
7x
If x is the hours that erica babysits, and 7 is the 7 days of the week. You will get that expression.
Because it is an expression, you cannot have an equal sign. It is an equation that has the equal sign.
45.10
i looked it up and thats what it said
what they said