Find the average rate of change of the function over the given interval. y = x2 + 9x, [7, 9]
A. 81
B. 18
C. 25
D. 
Answer: C
Mathematics
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Express as a sum of logarithms.log6 0.10y
A. log6 0.10 + log6 y B. log6 (0.10 + y) C. log 0.10 + log y D. log 6 + log 0.10
Mathematics
Factor completely. If the polynomial cannot be factored, write prime.x2 - x - 40
A. (x - 5)(x + 8) B. (x - 40)(x + 1) C. (x + 5)(x - 8) D. Prime
Mathematics
Find the vertex, focus, and directrix of the parabola with the given equation.(x + 1)2 = 12(y + 3)
A. vertex: (-1, -3) focus: (-1, 0) directrix: y = -6 B. vertex: (-3, -1) focus: (-3, 2) directrix: y = -4 C. vertex: (-1, -3) focus: (-1, -6) directrix: x = 0 D. vertex: (1, 3) focus: (1, 6) directrix: y = 0
Mathematics
Write the equation in standard form.y2 - x2 + 49 = 0
A. 
- 
= 1
B. 
- 
= 1
C. 
- 
= 1
D. 
- 
= 1
Mathematics