You can't at standard temperature and pressure. Minimum temperature needed is about 130 F and it would take about 20 minutes at that.
C. 28 is the answer
Staring from the brackets we have 4+(-8) we can open the parentheses and get 4-8 and get -4. Now we can open the -7 up and now we have
-4 * -7 = 28
Hope this helps!
ANSWER
r = 10
EXPLANATION
To solve for r first we have to put r in the numerator. To do that, we have to multiply both sides of the proportion by r:

Now, we have to multiply both sides by 35:

And finally divide both sides by 28:
Answer:
$8.57
Step-by-step explanation:
42.86 x 0.20 = 8.572
Answer:
B. 1
All numbers to the 0 power equal 1.