Key to Practice Midterm II

Problem 1

A.  28/9

B.  log12/log576

C.  2.096

Problem 4

A.  Hyperbola with x-intercepts

B.  Circle

C.  Parabola (standard)

D.  Ellipse

Problem 5

x²/9 + y²/4 = 1

Problem 6

A. No

B.  f^-1(x) = 1/3 x - 2

Problem 7

A.  5log₃ x + 2log₃ y - 4

B.  log₅ x + 1/2 log₅(y² + 25)