Find the average rate of change for the function over the given interval.y = x2 + 8x between x = 7 and x = 9
A. 
B. 17
C. 24
D. 
Answer: C
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Use the definition of inverses to determine whether f and g are inverses.f(x) = 
, x ? -5; g(x) = x2 + 5
A. No B. Yes
Solve the problem.Two angles are supplementary, and one is 5° more than six times the other. Find the larger angle.
A. 25° B. 70° C. 110° D. 155°
Complete the square and write the equation in standard form. Then give the center and radius of the circle.x2 + y2 + 6x + 8y + 25 = 16
A. (x + 4)2 + (y + 3)2 = 16 (-4, -3), r = 4 B. (x + 3)2 + (y + 4)2 = 16 (3, 4), r = 16 C. (x + 4)2 + (y + 3)2 = 16 (4, 3), r = 16 D. (x + 3)2 + (y + 4)2 = 16 (-3, -4), r = 4
The graph of a function f is given. Use the graph to answer the question.How often does the line y = -10 intersect the graph?
A. three times B. once C. twice D. does not intersect