Solve the equation.-4(x + 5) = -4
A. x = 6
B. x = -4
C. x = 16
D. x = 4
Answer: B
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Use a proportion to solve the problem.If a spring stretches 2 meters when a 2-kilogram weight is attached to it, how much will it stretch when a 14-kilogram weight is attached to it?
A. 16 m B. 13 m C. 17 m D. 14 m
Simplify.(x-4y5)-3
A. 
B. 
C. 
D. 
Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = 7i + 3j , v = i - j
A. 4; 4k B. 10; -10k C. 10; -k D. 4; -4k
Given the set sketched on the number line, identify the type of interval (open, closed, half-open, open infinite, closed infinite), write the set using set-builder notation, and write the set using interval notation.
A. closed interval; {x|-3 ? x ? 2}; [-3, 2] B. half-open interval; {x|-3 ? x < 2}; [-3, 2) C. open interval; {x| -3 < x < 2}; (-3, 2) D. half-open interval; {x|-3 < x ? 2}; (-3, 2]