Rudy worked hard all summer. before school starts he decided to go shopping and spend some of his earnings. he spent one third of his money on a new shirt at hot fashions in the mall. he then went to marvin's music and bought a cd with one third of the money he had left. at movies-to-go he spent one third of the money he now had on a video he wanted. he stopped one more time on his way home and bought a paperback at bert's book shop with one third of his remaining money. rudy arrived home with just $16.00 in his wallet. how much money did he have when he started out?

This is a constant problem. He kept on spending 1/3 of his money. The inverse number of 1/3 is 3. Basically the fraction flipped. So he spent 1/3 of his money 4 times. So we multiply 16*3*3*3*3. Multiply by 3 four times. 16*3 is 48. 48*3 is 144. 144*3 is 432. 432*3 is 1296. He started with 1296 dollars. If hes a kid hes rich.

Step-by-step explanation:

the functions have the same rate of change i think. i narrowed it down to this answer and "the rate of change of tour 1 is greater" but i got it wrong using that answer so im assuming its the answer above. (this is a question i also answered from the iready site if anyone needs a reference)