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. open infinite interval; {x|x > 4}; (4, ?)
B. closed infinite interval; {x|x ? 4}; (-?, 4]
C. open infinite interval; {x|x < 4}; (-?, 4)
D. closed infinite interval; {x|x ? 4}; [4, ?)
Answer: B
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Solve. Round your answer to the nearest tenth, if necessary.An object is thrown upward from the top of a 
building with an initial velocity of 48 feet per second. The height, h, of the object after t seconds is given by the quadratic equation 
When will the object hit the ground?
A. In 5 seconds B. In 160 seconds C. In 2 seconds D. In 7 seconds
Solve the equation.log4 (x + 2) + log4 (x - 4) = 2
A. x = -4 B. x = 6, x = -4 C. x = 7 D. x = 6
Simplify completely.
A. 7x - 8
B. 
C. 
D. 7x2 - 30
Graph the whole numbers less than 7 on a number line.
What will be an ideal response?