Solve the problem.A deep-sea diver dives from the surface to 122 feet below the surface. She then dives down 9 more feet. Find the diver's depth.
A. 113 feet below the surface
B. 134 feet below the surface
C. 111 feet below the surface
D. 131 feet below the surface
Answer: D
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A win-win lottery is organized. There are 130 wins, 30 of them are $70, 30 of them are $30, and 70 of them are $10. What is the average gain for a person who bought one ticket?
a. 28.462 b. 0.846 c. 81.538 d. 36.667
Compute the product.
A. 
B. 
C. 
D. 
Mark as true any statement that is always true. Mark as false any statement that is never true or that is not necessarily true. Be able to justify your answers.
1. If the x-coordinate of P is positive and the y-coordinate of P is negative, then P is in Quadrant IV. 2. If AB = ?7, BC = ?3, and AC = ?10 , then A, B, and C are collinear. 3. If M(a, b) is the midpoint of for A(c, d), then B has coordinates (2a–c, 2b–d). 4. If the slopes of two different lines are undefined, then the lines are parallel. 5. If the slope of a line is m, then the slope of any perpendicular line is -1/m.
Without graphing the function, determine its amplitude or period as requested.y = cos 5xFind the period.
A. 2?
B. 1
C. 5
D. 