5. 2*(7+x) which if you distributed would be 14+2x.
6.x - 8^2 or x-64.
Hope this helped!
I think that equation is supposed to look like this:

The reason I say that is because this is an exponential decay problem, with a starting amount of 50 pieces of candy.
If that's the case, then it would look like this with a t value of 5:

and

so the amount of candy left after 5 minutes is 16.384 or 16
Answer:
-40m + 24
Step-by-step explanation:
to answer this question you should distribute the -8 to all the digits
-8m + 24 -32m
then you can add like terms
-8m and -32m become -40m
-40m + 24 is the answer
Length=l
width=w
18.5<l<18.6
36.7<w<36.8
Hope this helps :)