Select the correct answer. Which equation represents a function?
О А.
x=13
OB.
1-12=34
C. 2y = -12
D.
22-42=7
E =15

Need ! discuss how to convert the standard form of the equation of a circle to the general form. 50 points

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

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]