Ricky is having a party and wants to fill his swimming pool. If he only uses his hose it takes 3.5 hours more than if he uses only his neighbor's hose. If he uses both hoses together, the pool fills in 7.5 hours. How long does it take for each hose to fill the pool?

Next, chad created this graph with ordered pairs that show the possible ratios of the number of damage to defense cards in his deck.what error chad make?

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

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