An electronic store chain sells headphones. The company is about to introduce a new headphone model that is expected to sell very well across its various stores. These are the projected revenue and cost functions for the headphones: Which two statements are true?

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

What is the sum of these mixed numbers 2 1/8 + 4 3/8

Which expression is equivalent to 8(k + m) − 15(2k + 5m)?