Rewrite with rational exponents.
A. m7/2
B. m2/7
C. -m7/2
D. 
Answer: A
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Answer the question.The following table gives the electricity usage (in kilowatt hours) for the Peters family for six months.
What is the average electricity usage for the months January through May?
A. 976.15 kwh B. 962.78 kwh C. 941.72 kwh D. 963.89 kwh
Graph the rational function.f(x) = 
A. 
B. 
C. 
D. 
Use Descartes's Rule of Signs to determine the possible number of positive and negative real zeros for the given function.f(x) = 7x4 - 10x3 + x2 - 3.5x + 20
A. 4 or 2 positive zeros, no negative zeros B. 4 positive zeros, no negative zeros C. 4, 2 or 0 positive zeros, 1 negative zeros D. 4, 2 or 0 positive zeros, no negative zeros
Solve the problem.A projectile is thrown upward so that its distance above the ground after t seconds is h(t) = -15t2 + 420t. After how many seconds does it reach its maximum height?
A. 21 sec B. 28 sec C. 7 sec D. 14 sec