Help me please with this homework

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

What are the steps to solving the inequality 3b + 8 ≥ 14?

The table below shows the height of a ball  x  seconds after being kicked.  what values, rounded to the nearest whole number, complete the quadratic regression equation that models the data? f(x)  =  x2  +  x  +  0based on the regression equation and rounded to the nearest whole number, what is the estimated height after 0.25 seconds?   feet