Bentley had $40 in birthday money in her piggy bank. She spent $10 on new flip-flops, then got $20 for her allowance and did not spend any of that money for 1 week. Finally, she spent $15 on new sunglasses.

Which part of the scenario is best represented by a linear increasing interval?

Bentley has $40 in her piggy bank.
Bentley spent $10 on new flip flops.
Bentley got $20 for her allowance.
Bentley spent $15 on sunglasses.

Question

Bentley had $40 in birthday money in her piggy bank. She spent $10 on new flip-flops, then got $20 for her allowance and did not spend any of that money for 1 week. Finally, she spent $15 on new sunglasses. 

Which part of the scenario is best represented by a linear increasing interval?

 Bentley has $40 in her piggy bank.
 Bentley spent $10 on new flip flops.
 Bentley got $20 for her allowance.
 Bentley spent $15 on sunglasses.