Evaluate the expression for the given replacement values.x + z for x = 8.3, z = 0.72
A. 7.58
B. 15.5
C. 9.02
D. 18.04
Answer: C
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Solve the problem.Consider the graph below, which gives the velocity of an object moving along a line. Assume time is measured in hours and distance is measured in miles. The areas of the three regions bounded by the velocity curve and the t-axis are also given. 
(a) What is the displacement of the object over the interval [0, 6]?(b) What is the total distance traveled by the object over the interval [2, 6]?
A. (a) 41 miles (b) 34 miles B. (a) 27 miles (b) 21 miles C. (a) 13 miles (b) 6 miles D. (a) 13 miles (b) 34 miles
Find the book value using the MACRS method of depreciation and the MACRS depreciation rates table. Round to the nearest dollar.MACRS Depreciation Rates 
Cost: $35,000Recovery Period: 5-yearAfter: First Year
A. $23,800 B. $23,335 C. $28,000 D. $29,999
Solve the problem.A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 288 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
A. 10,368 ft2 B. 20,736 ft2 C. 15,552 ft2 D. 5184 ft2
Solve.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is cost and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 31 watches B. 40 watches C. 39 watches D. 79 watches