Solve the problem.An experienced accountant can prepare a certain complexity of tax return in 9 hr. A novice accountant can do the job in 16 hr. How long will it take them to do the job working together?
A. 20
hr
B. 
hr
C. 5
hr
D. 
hr
Answer: C
Mathematics
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Solve the equation.
x - 16 = 0
A. {4, -4} B. {2} C. {-2} D. {-1}
Mathematics
Find a z-score satisfying the given condition.4% of the total area is to the right of z.
A. 1.76 B. -1.75 C. 1.75 D. 1.74
Mathematics
Graph the function.f(x) = 
A. 
B. 
C. 
D. 
Mathematics
Factor the polynomial completely. If a polynomial cannot be factored, state that it is irreducible.64x2 - 144x + 81 - 49y2
A. (8x - 9 + 7y)(8x - 9 - 7y) B. (8x + 9 + 7y)(8x - 9 - 7y) C. (8x + 9 + 7y)(8x + 9 - 7y) D. irreducible
Mathematics