I'm an idiot. how do you know the difference between a quadratic and exponential equation just by looking at it without a graph? ( dummy it down for me because i have read the lesson 5 times and still don't understand it.)

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

Find the volume of the described solid. the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x. a) 441b) 147c) 864d) 882

John checked his watch and said that it is thursday, 7 am. what will the day and time be 2006 hours plzzz i will give you 100 points