7.) walter and brian each have a cd collection. walter has x amount of cds whereas brian has 3 times the number in walter’s collection. the total number of cds in both collections is 144. what is x, the number of cds in walter’s collection?

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

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

The weight of an object in the water is 7% of its weight out of the water. what is the weight of a 652g object in the water?