Solve the problem.When a person bends at the waist with a straight back, the force, F, exerted by the person's lower back muscles can be estimated with the formula 
where w is the person's weight, and ? is the angle made by the person's torso relative to the horizontal. Suppose that a 
person bends at an angle of 35°. Determine the force exerted by the person's back muscles, and estimate the angle that requires the back muscles to exert a force of 197 pounds.
A. 29 pounds; 55.4°
B. 284 pounds; 35°
C. 199 pounds; 48.3°
D. 284 pounds; 55.4°
Answer: D
Mathematics
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Graph the line.y = 5x
A. 
B. 
C. 
D. 
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Find an equation of an ellipse satisfying the given conditions.Vertices: (-1, -4) and (9, -4); endpoints of minor axis: (4, -8) and (4, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 0
D. 
+ 
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Mathematics
Solve.Write a polynomial in factored form that represents the total area of the figure.
A. 2x2 + 3 B. (2x - 1)(x - 3) C. 2x2 + 7x + 3 D. (2x + 1)(x + 3)
Mathematics