The diameter of a circle on a coordinate plane has endpoints at 2:30 in to eight what is the approximate area of the circle

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

Iwant to know what 3g+5h+4g-2h is my teacher is too selfish to tell us

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.