Dog weighs 8 x as much as cat. together they weigh 54 pounds. what does the dog weigh

Divide fifty four by eight which would get you to 6.75

Since we have given that
Eliza started her saving account with $100 .
So, Initial amount = $100
Each month she deposits $25 into her account ,
So, Increment per month = $25
Now, we need a relationship between the amount Eliza deposit and the total amount in her amount will be

So, required function will be

In Second month, amount will be

In tenth month, amount will be

Average rate of change from second month to the 10 th month will be

Hence, average rate of change will be $25 per month.