Answer: B
Step-by-step explanation: How do we find the local extrema? Let f be continuous on an open interval (a,b) that contains a critical x-value. 1) If f'(x) > 0 for all x on (a,c) and f'(x)<0 for all x on (c,b), then f(c) is a local maximum value. 2) If f'(x) < 0 for all x on (a,c) and f'(x)>0 for all x on (c,b), then f(c) is a local maximum value.
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Explanation:</h2>
Here we know that at 3:17 pm you started to bake the cake. The total revolution the minute hand on the clock makes is:
We know that:
Solving for x:
So it takes 70 minutes after you put the cake in the oven. But:
Adding this to the initial time:
Finally, the cake is done at 4:27 pm, option C.
Answer:
8
Step-by-step explanation:
f(1)=7(1-1)+8
f(1)=7(0)+8
f(1)=0+8
f(1)=8
Answer: B.)
Step-by-step explanation: