Which generalization can you make based on the information on the chart?

What is the lowest output value approached by the function f(x)=2x−5?

What is the approximate circumference of the circle shown below? 12.2 cm

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks