Which of the following scenarios can be represented by the equation below?
0.11(x + $335) = $68.45
Check all that are true.

John's aunt paid $68.45 to help John fix his car. The $68.45 was 11% of the $335 charge for parts and x, the cost of labor.

Steven paid $335 for a new treadmill and x dollars for a stationary bike. He buys a warranty for $68.45, or 11% of the total cost.

Mariah used 11% of her savings of $335 toward her school books. Mariah's sister gave her $68.45 to use toward her school books. In total, Mariah paid x dollars for her school books.

Marla and Ken gained $335 from their investment account by earning 11% interest on both Marla's investment of $68.45 and