Hello this is fuzzy can unicornfuzzy answer?

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

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

Your friend uses c=50p to find the total cost, c, for the people, p, entering a local amusement park what is the unit rate and what does it represent in the context of the situation?