A bridge is built in the shape of a semielliptical arch. The bridge has a span of 80 feet and a maximum height of 30 feet. Choose a suitable rectangular coordinate system and find the height of the arch at a distance of 30 feet from the center.

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

Which table shows a proportional relationship between miles traveled and gas used?

Michael is training for a marathon. in his first week he plans to run 8miles. what path should he take