Question

Maddy and Caitlin spend a certain amount of money from their money box each month to buy bracelet-making supplies.

Answer 1

Solutions 

We know that Function 1 shows a greater rate of change, because Maddy spends $20 each month and Caitlin spends $18. 

Maddy spends 2 dollars more. 

Therefore the correct answer is the last option.  

Answer 2

Function 1 shows a greater rate of change, because Maddy spends
$20 each month and Caitlin spends $18 each month (last choice).