50 percent is the probability
Answer: 
Step-by-step explanation:
Given: The number of bacteria, B, in a refrigerated food is given by the function
, where t is the temperature of food in degrees Fahrenheit.
The function
gives the temperature, t, of the food h hours after being removed from the refrigerator.
Now, the number bacteria in the food in h hours is given by:-

So, The number bacteria in the food in h hours is given by:

Answer: 35/3 or 11.6
Step-by-step explanation:
3x-7=28
Add 7 to each side
3x=35
Divide by 3