Help plz, don't answer if you don't know, and plz explain. (DON'T PASTE LINKS) Question 1. What is the Mode on the dot plot above? (Name length question)

A. 3

B. 6

C. 9

Question 2.

A. 10

B. 30

C. 40

Three coins are flipped. what is the probability that there will be at least two tails?

What number should be added to the expression x^2+3x+ in order to create a perfect square trinomial? 3/2 3 9/4 9

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