Graph the function f by starting with the graph of y = x2 and using transformations (shifting, compressing, stretching, and/or reflection).f(x) = 
x2 + 4
A. 
B. 
C. 
D. 
Answer: A
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Solve the problem.A spherical water tank with an inner radius of 10 m has its lowest point 1 m above the ground. It is filled by a pipe that feeds the tank at its lowest point (see figure). Neglecting the volume of the inflow pipe, how much work is required to fill the tank if it is initially empty? Express the answer in terms of ?. 
A. 
? J
B. 
? J
C. 
? J
D. 
? J
Solve the problem using Gaussian elimination.A company makes 3 types of cable. Cable A requires 3 black, 3 white, and 2 red wires. B requires 1 black, 2 white, and 1 red. C requires 2 black, 1 white, and 2 red. They used 100 black, 110 white and 90 red wires. How many of each cable were made?
A. 20 cable A 30 cable B 10 cable C B. 10 cable A 30 cable B 20 cable C C. 10 cable A 30 cable B 93 cable C D. 10 cable A 103 cable B 20 cable C
Determine if the graph of the function is concave up or concave down.y = - 
(x + 5)2 - 4
A. Concave up B. Concave down
Use Cramer's rule to solve the linear system. If D = 0, use another method to determine the solution set.x - y + z = 3x + y + z = -5x + y - z = -7
A. Cramer's rule does not apply since D = 0; ? B. {(-2, 1, -4)} C. {(-2, -4, 1)} D. {(1, -2, -4)}