Match the system with the correct graph.x + y = -7x - y = 3
A. 
B. 
C. 
D. 
Answer: B
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The given limit is a derivative, but of what function and at what point?
- 
A. f(x) = 8x3 at x = 2 B. f(x) = 2x3 at x = 8 C. f(x) = 2x3 at x = -8 D. f(x) = 8x3 at x = -2
Express the ratio in simplest form.0.15 kg to 2000 mg
A. 750
B. 
C. 75
D. 
Solve.On a biology test, a student got 25 questions correct but did not pass. On a second attempt, the student got 37 questions correct. What was the percent of increase?
A. 32.4% B. 48% C. 12% D. 52%
Solve the problem. Assume that relative maximum and minimum values are absolute maximum and minimum values.Suppose that the labor cost for a building is approximated by C(x, y) = 10x2 + 6y2 - 200x - 360y + 14,000, where x is the number of days of skilled labor and y is the number of days of semiskilled labor required. Find the x and y that minimize cost C.
A. x = 10, y = 30 B. x = 30, y = 36 C. x = 36, y = 90 D. x = 20, y = 60