Which statement is true? A. All squares are similar to each other
B. All rectangles are similar to each other
C. All squares are similar to each other, and all rectangles are similar to each other
D. None is true

Can somebody me out with this question

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

Graph the equationy=x^2 -[tex]y = x^{2} - 2[/tex]