If f of x is equal to negative 2 lceil x rceil plus 8 , what is f of negative 1 point 8 ?
Answer
A
4
B
6
C
12
D
10
Explanation
The ceiling of −1.8 is −1, since −1 is the smallest integer greater than or equal to −1.8. Substituting gives f(−1.8) = −2(−1) + 8 = 10, so the correct choice is 10.
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