Factor completely.49x2 - 9

A. (7x + 3)(7x - 3) 
B. (49x + 1)(x - 9) 
C. (7x + 3)2
D. (7x - 3)2


Answer: A

Mathematics

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Determine whether there is a maximum or minimum value for the given function, and find that value.f(x) = - x2 + 3x - 5

A. Maximum: 
B. Maximum: -5
C. Minimum: 
D. Minimum: - 

Mathematics

If a man jumps from an airplane with no parachute, his velocity after t seconds is given by  feet per second.  How long will it take for his velocity to reach 106.67 feet per second? ?

A. 7 seconds B. 5 seconds C. 0.83 second D. 175.17 seconds

Mathematics

Solve the problem.Doctors predict that by administering a vaccine, the number of new cases of a certain childhood disease will decrease by half each year. If 900 people were afflicted with the disease in 2012, estimate the number of new cases in 2017. Round to the nearest whole number.

A. 14 new cases B. 56 new cases C. 113 new cases D. 28 new cases

Mathematics

Use transformations to graph the function.f(x) = 2 - e-x

A.

B.

C.

D.

Mathematics