Answer:
-23c - 15
Step-by-step explanation:
-4(5c+7) - 3c + 13
Expand brackets.
-20c - 28 - 3c + 13
Rearrange.
-20c - 3c - 28 + 13
Add or subtract like terms.
-23c - 15
Answer:

Step-by-step explanation:
The temp is 100 at time t = 0
After 1 sec, the temp difference would be:

After 2 sec, the temp difference would be:

Similarly for 3 seconds, 4 seconds etc.
We notice that the parenthesis part is 40% of it, so we can also write:
100(40%)^t,
where
t is the time
40% can be written as 40/100 = 0.4
SO, the function is:

Answer:
221
Step-by-step explanation:
Make a proportion.
182/14 = x/17
182 x 17 divided by 14 is 221