The Hill family and the Gonzales family each used their sprinklers last summer. The Hill family's sprinkler was used for 35 hours. The Gonzales family's sprinkler was used for 20 hours. There was a combined total output of 1850L of water. What was the water output rate for each sprinkler if the sum of the two rates was 70L per hour?

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6

What is the 12th term of b(n)=-4-2(n-1)

Ametal rod needs to be 9 feet and 5.5 inches in length. the sections of the poles being used are each 1 foot and 10.5 inches long. how many 1ft 10.5in sections would be needed to complete the 9ft 5.5in metal rod? and how many inches of material will be left?