Use the quadratic formula to solve the equation.2x2 - 16x + 30 = 0
A. 0, 3, 5
B. -3, -5
C. 3, 5
D. 2, 3, 5
Answer: C
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Solve the linear system using an inverse matrix.
A. (2, 3) B. (-3, -2) C. (-2, -3) D. (3, 2)
Find the missing parts of the triangle. Round to the nearest tenth when necessary or to the nearest minute as appropriate.B = 63°30'a = 12.2 ftc = 7.8 ft
A. b = 12.2 ft, A = 75°07', C = 41°23' B. No triangle satisfies the given conditions. C. b = 13.2 ft, A = 73°07', C = 37°23' D. b = 11.2 ft, A = 77°49', C = 38°41'
Use the minimum and maximum features of a graphing calculator to find approximately the intervals on which the function is increasing or decreasing. Round your values to two decimal places, if necessary.y = 
+ 
- 10
A. inc (10, ?), dec (-?, 2) B. inc (2, ?), dec (-?, 6) C. inc (-?, -2), dec (6, ?) D. inc (6, ?), dec (-?, -2)
Solve the problem.The cost of manufacturing a molded part is related to the quantity produced during a production run. When 100 parts are produced, the cost is $300. When 600 parts are produced, the cost is $3800. What is the average cost per part?
A. $0.14 per part B. $5.83 per part C. $7.00 per part D. $8.00 per part