Solve the problem.The graphing calculator screen shows the graph of one of the equations below. Which equation is it?
A. y + 3x = 3
B. y = 3x + 3
C. y + 3x = 15
D. y - 3x = 15
Answer: B
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Plot a slope field for the differential equation. Plot the particular solution of the differential equation that satisfies the given initial condition.y' = x2 - y2; y(0) = 3
A. 
B. 
C. 
D. 
The line graph shows the recorded hourly temperatures in degrees Fahrenheit at an airport. 
At what times was the temperature below 77°F?
A. after 3 p.m. B. from 12 p.m. until 3 p.m C. from 9 a.m. until 12 p.m. and from 3 p.m. until 6 p.m. D. from 9 a.m. until 11 a.m. and from 3 p.m. until 6 p.m.
Find the square root.
A. 20 B. 1600 C. 80 D. 40
Solve the problem.One end of a guy wire is attached to the top of a 20-foot pole and the other end is anchored into the ground 13 feet from the base of the pole. Find the length of the guy wire. Round to the nearest tenth of a foot when appropriate. 
13 ft
A. 33.2 ft B. 24.1 ft C. 23.9 ft D. 33 ft