The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
During which hour did the temperature increase the most?
A. 10 a.m. to 11 a.m.
B. 1 p.m. to 2 p.m.
C. 9 a.m. to 10 a.m.
D. 12 p.m. to 1 p.m.
Answer: A
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Determine which of the fundamental laws of algebra is demonstrated.6 × 4 = 4 × 6
A. Distributive B. Commutative C. Associative
Graph the scalar product of the complex number shown in the graph and the given number.2
a = -1 + 3j
A. 
b = 2(-1 + 3j)
B. 
b = 2(-1 + 3j)
C. 
b = 2(-1 + 3j)
D. 
b = 2(-1 + 3j)
Use Gauss-Jordan elimination to solve the linear system and determine whether the system has a unique solution, no solution, or infinitely many solutions. If the system has infinitely many solutions, describe the solution as an ordered triple involving variable z. x + y + z = 92x - 3y + 4z = 7
A. 
B. no solution
C. 
D. 
Solve the problem.A cable TV company charges $22 for the basic service plus $8 for each movie channel. Let y be the total cost in dollars of subscribing to cable TV, using x movie channels. Find the slope-intercept form of the equation.
A. y = 8x - 22 B. y = 22x + 8 C. y = 22x - 8 D. y = 8x + 22