How do you tell if the square is a trapezoid or an isosceles trapezoid? (#3 on top, and the first and last one at the bottom)

Acable company wants to provide cell phone service for residents on an island. the function for the cost of laying the cable from the island to the mainland is c(x)= 6.500 square root x2+4, where x represents the length of the cable in feet. what are the domain and range of the function? a) domain: all real numbers range: all real numbers greater than or equal to 17,000 b) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 17,000 c) domain: all real numbers greater than or equal to 0 range: all real numbers greater than or equal to 13,000 d) domain: all real numbers greater than or equal to 13,000 range: all real numbers greater than or equal to 0

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

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11