Express 0.24 as a percent

For f(x)=2x+3 and g(x)=x^2- 8 find (f+g) (x)

The given dot plot represents the average daily temperatures, in degrees fahrenheit, recorded in a town during the first 15 days of september. if the dot plot is converted to a box plot, the first quartile would be drawn at __ , and the third quartile would be drawn at __ link to graph: .

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1