Substitute to Find the Value of the Expression $x$ Represents the Amount That Maureen Earns Per Week, Then

Multiple Choice

Substitute to find the value of the expression.
-Mary earns three times as much per week as Maureen. If $x$ represents the amount that Maureen earns per week, then $3 x$ represents the amount that Mary earns per week. How much does Mary earn per week if Maureen earns $\$ 345$ per week?

A) $\$ 342$
B) $\$ 115.00$
C) $\$ 1035$
D) $\$ 348$