I already posted this photo once asking for answers, but I only said "Thank you, have a nice day." with the photo, and apparently that confused some brainless people. Anyways, I would appreciate it if someone could help me with the question in this photo. Thank you!

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 multiplication property of zero states that the product of any number and 0 is 0. what must be true about either a or b to make ab=0

What is the area of triangle abc if a = 8, b = 11, and c = 15?