Find the center of the hyperbola.y2 - x2 - 8y + 8x - 25 = 0
A. (-1, 4)
B. (4, -1)
C. (-4, -4)
D. (4, 4)
Answer: D
Mathematics
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Find the average value of the function f over the given region.f(x, y) = e2x; R = 
A. 
B. e - 1
C. 2e - 1
D. 
Mathematics
Graph the function.y = 
sec x
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Four bacteria are placed in a petri dish. The population will double every day. The formula for the number of bacteria in the dish on day t is N(t) = 4(2)twhere t is the number of days after the four bacteria are placed in the dish. How many bacteria are in the dish seven days after the four bacteria are placed in the dish?
A. 13 B. 512 C. 56 D. 196
Mathematics
Determine the most appropriate metric unit to go in the blank. Choose from L, ml, kg, g, and mg.The baby weighs 4 
.
A. mL
B.
| L |
C.
| mg |
D. g
E.
| kg |
Mathematics