Use rational equations to solve the problems.Martha can rake the leaves in her yard in 3 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. 
hr
D. 5 hr
Answer: C
Mathematics
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Write the numeral as a Roman numeral.32,400
A. 
MMCD
B. 
MMCD
C. 
MMCDII
D. 
MMCD
Mathematics
Collect like terms.3p + 4q + 2p + 5q
A. 5p + 9q B. 3p + 9q + 2 C. 5p + 4q + 5 D. 4pq
Mathematics
Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.(x5y-1)3
A. 
B. x15y3
C. 
D. 
Mathematics
Find the requested value.f(x) = 5x2 + 4, g(x) = x - 4Find f(-5) - g(-5).
A. 130 B. 128 C. 138 D. -124
Mathematics