Solve.Martha can rake the leaves in her yard in 4 hours. Her younger brother can do the job in 5 hours. How long will it take them to do the job if they work together?
A. 
hr
B. 
hr
C. 5 hr
D. 20 hr
Answer: A
Mathematics
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Graph the line using the point-plotting method and the given values of x. y = 
x + 5
A. 
B. 
C. 
D. 
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Find the number of subsets of the set.{1, 2, 3, . . . , 8}
A. 16 B. 512 C. 256 D. 252
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Convert as indicated.The meeting hall in the student union has 9900 square feet of floor space. Convert this to square yards.
A. 29,700 square yards B. 3300 square yards C. 89,100 square yards D. 1100 square yards
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Solve the inequality. Express your answer using interval notation.
-1/2 > 0
A. (- ?, 8]
B. (8, ?)
C. (- ?, 8)
D. [8, ?)
Mathematics