The range would be (-infinity,5)
heres why..
x≤0 means that x is less than or equal 0 so if you plug in 0 then -1 then -2 ect. because we know all x's are 0 or less.
<span>To ask how much longer the professor will live is to ask how much longer we must wait for the blessings of another world war.
"blessings" being the key word, because a world war would not bring blessings, but devastation. </span>