Solve the problem.Martha can rake the leaves in her yard in 6 hours. Her brother can do the job in 5 hours. How long will it take them to do the job working together?
A. 
hr
B. 2
hr
C. 
hr
D. 30 hr
Answer: B
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Determine the domain and range of the function.{(1, -2), (4, -5), (-5, -3), (5, 1)}
A. Domain: {-2, -5, -3, 1}; range: {1, 4, -5, 5} B. Domain: {1, 4, 7, 5}; range: {-2, -5, -3, 7} C. Domain: {1, 4, -5, 5}; range: {-2, -5, -3, 1} D. Domain: {1, 0, -5, 5}; range: {-2, -5, 0, 1}
Factor completely using the grouping method to factor trinomials. If unfactorable, indicate that the polynomial is prime.12z2 - 7z - 12
A. (12z - 4)(z + 3) B. prime C. (3z + 4)(4z - 3) D. (3z - 4)(4z + 3)
Solve for x in the proportion.
= 
A. 20
B. 5
C. 
D. 2
Find the length of the third side of the right triangle. Give an exact answer and, where appropriate, an approximation to three decimal places.
A. c = 
cm; c ? 12.806 cm
B. c = 
cm; c ? 6.000 cm
C. c = 
cm; c ? 11.489 cm
D. c = 18 cm