They are going to have a candy party but some burglars steal their barrels of candy and they have to get it back
"Can't wait for the the party this week," said Lizzy. "Do we have enough barrels?" said Billy. "We have 30 but only need 24 barrels" said Tod.
"I heard they're running a candy store, which means free candy for us!" said one bandit. "And they'll never catch us because each day we go to steal some candy we will wait 5 more minutes after the store closes," said the other. "So we will steal the candy at a linear rate of change which means we will wait 5 more minutes every day we steal the barrels."
5 minutes after closing
"They left, it is our time to steal," he said "Remember we have to steal the barrels in a linear rate which means the rate of change is constant between two points" The robbers steal a barrel each. An alarm starts to go off so they start to run away with the barrels.
10 minutes after closing
"Two of our barrels are gone," said Lizzy "Let's check the cameras," said Billy. They saw the two figures wait 5 minutes after the store was closed. "So we should stay 5 minutes after closing to make sure the bandits don't steal again," said Lizzy "Yeah," said Billy and Tod together.
"It's been 5 minutes and the robbers haven't come.," said Billy. "Maybe they knew that we would try to catch them and are not coming anymore," said Tod. "Yeah we should go," agreed Lizzy.
"I just watch them leave so our plan is a success," she said. He said, "Let's go quickly because the alarm will go off any second." They stole a barrel each and ran off while the alarm was buzzing.