Question

If f(x) = -2[x] + 8, what is f(-1.8) (PLS HELP ASAP)

Answer 1

the function is least integer function, not greatest integer function.
in this the output is the closest right side integral value.
-2[-1.8]+8
=-2×-1+8
=2+8
=10

Answer 2

option c)10

Explanation:

Given is a least integer function as

`f(x) =-2[x]+8`

We are to find out the function value when x = -1.8

Substitute for x the value -1.8

we have

`f(x) =-2[-1.8]+8\\`

-1.8 has the integer -1 to the left of it.

Hence we get

`f(x) =-2[-1]+8=10`

Hence answer is option c)10