Solve the equation.5x = -10
A. {-5}
B. {-2}
C. {5}
D. {2}
Answer: B
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Solve and, when appropriate, round the answer to the nearest tenth.The length L that a spring is stretched from its natural length using W amount of work (in foot-pounds) is given by L = 
, where k is a given constant for the spring. If a certain spring has a constant value k of 47.4 and the spring is to be stretched 1.6 feet from its natural length, how much work will be necessary?
A. 30 foot-pounds B. 37.9 foot-pounds C. 60.7 foot-pounds D. 121.3 foot-pounds
Write interval notation for the graph.
A. (q, ?) B. [q, ?) C. (-? , q] D. ( -?, q)
Simplify. Express the final answer in exponential form.76 ? 73
A. 79 B. 4918 C. 499 D. 718
Find the axis of symmetry of the given function.f(x) = 5x - 1 -x2
A. x = 
B. x = - 
C. x = 5
D. x = 