Given that the probability is
modeled by the function
[tex]y=3(257,959)^x[tex]
where x is the impurity
concentration and y, given as a percent, is the probability of the fuse
malfunctioning.
Then, the probability of the fuse malfunctioning for an impurity concentration of 0.17 is given by
[tex]y=3(257,959)^{0.17}=3(8.316941)=24.95[/tex]
Therefore, the probability of the fuse malfunctioning for an impurity concentration of 0.17 is 25% to the nearest percent.