Solve.Frank can type a report in 3 hours and James takes 4 hours. How long will it take the two of them typing together?
A. 
hr
B. 12 hr
C. 
hr
D. 4 hr
Answer: C
Mathematics
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Use the given feasible region determined by the constraint inequalities to find the maximum possible value of the objective function.f = 7x + 6y subject to the constraints 
A. 385 B. 405 C. 231 D. 275
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Find the product.(3r - 5)(3r + 5)
A. 3r2 - 25 B. 9 + 30r - 25r2 C. 9r2 - 30r - 25 D. 9r2 - 25
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Solve the equation by factoring.50x2 + 30x = 0
A. - 
B. 0
C. - 
, 0
D. - 
, 30
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Use the zero-exponent rule to simplify the expression.130
A. -1 B. 0 C. 13 D. 1
Mathematics