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 interval; {x| -6 < x < -1}; (-6, -1)
B. half-open interval; {x|-6 < x ? -1}; (-6, -1]
C. closed interval; {x|-6 ? x ? -1}; [-6, -1]
D. half-open interval; {x|-6 ? x < -1}; [-6, -1)
Answer: A
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Use elimination to solve the system of equations.x - 7y = -104x - 8y = -20
A. (3, 2) B. Inconsistent; no solutions C. (-3, 1) D. (-4, 2)
Provide an appropriate response.Find two numbers whose sum is 30 and whose product is a maximum.
Fill in the blank(s) with the appropriate word(s).
Verify that the values of the variables listed are solutions of the system of equations.
x = 0, y = 4, z =2
A. not a solution B. solution
Solve.The altitude above sea level of an airplane just after taking off from an airport on a high plateau is given by the linear function h(t) = 1100t + 3546, where h(t) is in feet and t is the time in minutes since takeoff. Find the altitude of the airplane after 6 minutes.
A. 6600 feet B. 10,246 feet C. 10,046 feet D. 10,146 feet