Aregular hexagon has side lengths 15 in. the perimeter of the hexagon is 90 in. a second hexagon has side lengths 18.75 in. find the perimeter of the second hexagon. round to the nearest tenth. 167.8 in 112.5 in 55.3 in 22.5 in

The level of co2 emissions, f(x), in metric tons, from the town of fairfax x years after they started recording is shown in the table below. x 2 4 6 8 10 f(x) 26,460 29,172.15 32,162.29 35,458.93 39,093.47 select the true statement.

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

X+ y = 5 ; x - y =3 solve using linear combination