Is the following relation a function?
107
Yes
No

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

0if x and y vary inversely and y=6 as x=7, what is the constant of variation?

What is the best approximation for the area of a circle with a radius of 4 m ? use 3.14 to approximate pi