Evaluate the expression 4x^2-6x+7 if x = 5

Really need on these. i have no idea what to do

In trapezoid efgh, m∠gfe=63∘. identify m∠ghe. !

Which formula finds the probability that a point on the grid below will be in the blue area? p(blue) = total number of squares number of blue squares number of blue squares p(blue) = total number of squares number of blue squares p(blue) = number of white squares