Provide an appropriate response.The range of f(x) = 
, the greatest integer function, is 
.
A. {. . . , -4, -2, 0, 2, 4, . . .}
B. [0, ?)
C. (-?, ?)
D. {. . . , -2, -1, 0, 1, 2, . . .}
Answer: D
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Change to decimal numbers.
A. 0.42 B. 0.28 C. 0.16 D. 0.36
Provide an appropriate response.In extreme temperatures, concrete can experience a ±1.2% change in length after it is laid. Considering this, if 20 ft sections of concrete are laid for a bridge during cold weather, what width of expansion joint must be allowed so that the bridge will not buckle in hot weather? Round your answer to the nearest hundredth of a foot.
Fill in the blank(s) with the appropriate word(s).
Provide an appropriate response.Solve the system of equations using the substitution method:4x - 2y = 72x - y = 5
A. inconsistent; no solution B. (-3, -11) C. (1, -3) D. dependent; many solutions
Find the exact value of the trigonometric expression without the use of a calculator.cos 
A. 
B. 
C. 
D. 1