Solve the problem.Martha can rake the leaves in her yard in 2 hours. Her younger brother can do the job in 7 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 7 hr
C. 
hr
D. 
hr
Answer: D
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Solve the problem.A ramp leading to the entrance of a building is inclined upward at an angle of 8°. A suitcase is to be pulled up the ramp by a handle that makes an angle of 34° with the horizontal. How much force must be applied in the direction of the handle so that the component of the force parallel to the ramp is 50 lbs.?
A. 8.573 lbs B. 55.66 lbs C. 44.94 lbs D. 59.72 lbs
Write the sentence with symbols, using x to represent the number.The quotient of a number and 4 is -3.
A. 
= 4
B. 
= 4
C. 4x = - 
D. 
= -3
Given the graph of a line, which of the following statements is true?
?
?
A. The slope of the line is negative, and its y-intercept is positive. B. The slope of the line is negative, and its y-intercept is negative. C. The slope of the line is positive, and its y-intercept is positive. D. The slope of the line is positive, and its y-intercept is negative. E. The slope of the line is zero.
Solve the equation graphically by converting it to an equivalent equation with 0 on the right-hand side and then finding the x-intercepts.5x2 = 
A. 0
B. 0, - 
, 
C. - 
, 
D. 0, - 
, 