4 mods delete questions on that are math related only none of them stop doing this how many problems are fixed /questions will be saved from this matter?

In which source of water would a wave travel the fastest? o ice o cold o room temperature o hot mark this and return save and exit next

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

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°