Answer:
helen works 16 hours
Step-by-step explanation:
caroline = 3 which is 24 hours
24/3 = 8
1 = 8 hours
8 hours x 2 = 16 hours
I’m not 100% sure but I think it’s D.
Answer:
Average rate of change for the function
over the interval -1<x<1 is -1
Step-by-step explanation:
We need to find average rate of change of f over the interval -1 < x < 1
The function given is: 
The formula used to find average rate of change is:

We have, a = -1 and b = 1
Finding f(b) when b=1

Now, finding f(a), when a= -1

Now, putting values and finding average rate of change

So, average rate of change for the function
over the interval -1<x<1 is -1
Answer:
-5
Step-by-step explanation:
$4 is the original price of the jar consisting of peanut butter so therefor it = 100%. It's for sale at $3.60, so we divide $4 by 100% so we get the percentage for each cent and then we times it by 3.60 to get the percentage for $3.60 which is 90%. Now we subtract 90% from 100% to get the discounted percentage for 40cents :)