Two trains leave the station at the same time, one heading east and the other west. the eastbound train travels at miles 90 per hour. the westbound train travels at miles 80 per hour. how long will it take for the two trains to be 204 miles apart?

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

The distributive property allows you to say that 3(x − 1) = 3x −

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?