It’s the third one ............
Answer:
62 ounces or 3.875 pounds
Step-by-step explanation:
convert the 8 pounds and 4 pounds into ounces then add the additional ounces then subtract
i hope that makes sense
I'm probably wrong but here you go!
Split the integration interval [-1, 1] into 4 subintervals:
[-1, -1/2], [-1/2, 0], [0, 1/2], [1/2, 1]
Each subinterval has a length of 1/2, which acts as the height of the corresponding trapezoid over the subinterval. The "bases" of the trapezoid are the function's values at the endpoint of the subinterval. For instance, over the first subinterval, we have

So over this subinterval, the trapezoid contributes an area of

Do the same with the other 3 trapezoids; you'll find

Based on my calculations, there are 2,820 seconds in 47 minutes.