The rectangle has an area of 4(x 3) square units. a- if the dimensions of the rectangle are doubled, what is the area of the new rectangle in terms of x? show your work. b- will the ratio of the area of the original rectangle to the area of the larger rectangle be the same for any positive value of x? explain.

Which graph represents the solution of the inequality?

Write a story that matches with the expression 42x-5 pls hurry

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