Solve the problem.Jim has gotten scores of 62 and 86 on his first two tests. What score must he get on his third test to keep an average of 75 or greater?
A. At least 76
B. At least 77
C. At least 74.3
D. At least 74
Answer: B
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Use implicit differentiation to find the specified derivative at the given point.Find 
at the point (4, 6, 6) for 4x2 + 6 ln xz + 6yz2 + 5ez = 0.
A. 
B. - 
C. - 
D. - 
Provide an appropriate response. A mixture of dirt, sand, etc. that weighs 350 pounds is 3 parts dirt, 1 part sand, 2 parts top soil, and 2 parts peat. How many pounds of dirt are in the mixture? Explain the process you used to find the answer.
What will be an ideal response?
Provide an appropriate response.If an object is dropped, the distance it falls after t seconds is given by d = 
gt2. A student is determining how long it would take an object to fall 100 feet on planet x having gravity 12 ft/sec2. The student determines the two solutions 
. Are both correct answers? Why or why not?
What will be an ideal response?
Solve the problem.An investigating officer examining skid marks at the scene of an accident estimates the speed of the vehicle to have been 94 feet per second. Was the driver exceeding the 55 miles per hour speed limit?
A. Yes. The driver was traveling 64 mi/hr. B. No. The driver was traveling 53 mi/hr.