A basketball is tossed onto the hardwood, where it bounces several times. We measure its location as distance down from the ceiling. When the ball is moving downward, what can be said about its velocity?
A. Velocity is positive.
B. Velocity is negative.
C. Velocity is 0.
D. None of the above.
Answer: A
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Find the inverse of the function.f(x) = 
, x ? -7
A. f-1(x) = -x2 + 7, x ? 0 B. Not a one-to-one function C. f-1(x) = x2 - 49, x ? 0 D. f-1(x) = x2 - 7, x ? 0
Use the Hamilton method to make the assignment.In a recent census, Iowa's population in thousands was 4,503, Illinois' was 8,220, and Indiana's was 5,300. Allocate 28 members of the U.S. House of representatives to these three states.
A. Iowa: 10; Illinois: 11; Indiana: 7 B. Iowa: 6; Illinois: 15; Indiana: 7 C. Iowa: 7; Illinois: 13; Indiana: 8 D. Iowa: 8; Illinois: 13; Indiana: 7
Find the center, foci, and asymptotes of the hyperbola.x2 - 
= 1
A. C: (0, 0); F: (4, 0), (-4, 0); A: y = 
x, y = - 
x
B. C: (0, 0); F: (
, 0), (-
, 0); A: y = 4x, y = -4x
C. C: (0, 0); F: (
, 0), (-
, 0); A: y = 
x, y = - 
x
D. C: (4, 0); F: (
, 0), (-
, 0); A: y = 
x, y = - 
x
Obtain an equivalent system by performing the stated elementary operation on the system.Multiply the third equation by 1/5.4x - y + 5z + w = -105x - z + 4w = 45x + 20y + 4z - w = 30 x + 3y - 8z = 1
A. 4x - y + 5z + w = -10
5x - z + 4w = 4
x + 20y + 4z - w = 30
x + 3y - 8z = 1
B. 4x - y + 5z + w = -10
5x - z + 4w = 4
x + 4y + 
z - 
w = 30
x + 3y - 8z = 1
C. 4x - y + 5z + w = -10
5x - z + 4w = 4
x + 4y + 
z - 
w = 6
x + 3y - 8z = 1
D. 4x - y + 5z + w = -10
5x - z + 4w = 4
x + 4y + 
z + 
w = 30
x + 3y - 8z = 1