Find the vertex of the parabola.y2 + 8x + 2y - 31 = 0
A. 
B. (4, -1)
C. 
D. (0, 4)
Answer: B
Mathematics
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Find the mean of the given values.75, 85, 61, 81, 58
A. 85 B. 75 C. 72 D. 60
Mathematics
Graph.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Bob owns a watch repair shop. He has found that the cost of operating his shop is given by 
where c is the cost in dollars, and x is the number of watches repaired. How many watches must he repair to have the lowest cost?
A. 39 watches B. 61 watches C. 40 watches D. 30 watches
Mathematics
Use the given conditions to write an equation for the line in slope-intercept form.Passing through (11, 8) and perpendicular to x = 5
A. x = 8 B. y = 11 C. x = 11 D. y = 8
Mathematics