I'll help on 12. You know that 5*5 is 25. therefore what times 5 equals 20?
Answer:
It is F
Step-by-step explanation:
if you plug in the y and x values that should get you the answer
Answer:

Step-by-step explanation:
We are given the temperature inside the machine from startup until 10 seconds later, the formula is:

We want to know at what time t the temperature inside the machine will be equal to 128 °C.
So we set:


Now, we rearrange the equation to keep terms with t on the left hand side and terms without t on the right hand side

and we simplify:


now it's easy to solve for t:

And thus we arrive to the solution.
20 now give brainly
if that is not it its -20