Photo attached please help

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Issof claims that the scale factor is 1/2. which statement about his claim is correct

The birth weights of newborn babies in the unites states follow in a normal distrubution with a mean of 3.4 kg and standard deviation of 0.6 kg. reaserches interested in studying how. children gain weights decide to take random samples of 100 newborn babies and calculate the sample mean birth weights for each sample