Determine the answer to (-3)+(-5) and explain the step using a number line

Which value is not a solution of 8x^3 – 1 = 0

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

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 the chart is here